Recalcitrant 4-t-Octylphenol used as a surfactant was subjected to the biodegradation with wood rot fungi, Basidioradulum molare and Schizopora paradoxa. Two fungi were grown in the culture medium containing various concentrations of 4-t-Octylphenol in order to investigate their resistance against 4-t-octylphenol Schizopora paradoxa was reached to the full growth within 14 incubation days in the concentration of more than 200 ppm of 4-t-Octylphenol, while Basidioradulum molare showed the inhibitory mycelium growth as the concentration was increased Schizopora paradoxa and Basidioradulum molare biodegraded 95% and 36% of initial concentration of 4-t-Octylphenol at first incubation day, respectively. However, the biodegradation capability reached to more than 95% after 3 incubation days. During the biodegradation of 4-t-Octylphenol, the activity of manganese dependent peroxidase was induced by the addition of 4-t-Octylphenol in the culture medium of Schizopora paradoxa, but that of laccase was maximal before the addition. The reduction of estrogenecity was assayed by MCF-7 cell proliferation test and measurement of pS2 mRNA expression. The level of pS2 mRNA was decreased down to the level of baseline at first incubation day. Also, estrogenecity of 4--t-Ocrylphenol completely disappeared after treatment with supernatant by Scbizopora paradoxa and Basidioradulum molare from first incubation day of culture down to the levels of vehicle.


This submission develops a set of arguments around the path dependency of places – how previous policy eras shape the trajectory and outcomes of places - and the tensions between social inclusion policies and practices on the one hand and competitiveness on the other. Path dependency results from previous legacies of the built form and access and eligibility rights. The "narrative" of places, the categories and descriptions used in delineating neighbourhoods and shaping policy is also influential. A coherent line of research is demonstrated which has revolved around the definition, measurement and scale of deprivation and housing's role in social exclusion and competitiveness debates. Originally focused at household and individual level, the enquiry shifted to the role of neighbourhoods and places in terms of their "compositional" and "environmental" meaning. The thesis revolves around the concept of participation standards and the underpinning principles of citizenship arising from denial of access to relative "norms and standards". This highlights tensions in the competing goals of competitiveness and inclusion in housing and urban policy at different scales resulting in differential speeds and experiences of place. Logically this would suggest that the evolution of citizenship and participation can legitimately embrace the concept of citizenship of place.


Growing evidence of neutrino oscillation and hence flavour mixing in the lepton sector of Standard Model suggests the existence of the Lepton Flavour Violation phenomenon. The Large Hadron Collider (LHC) has very good potential for probing various processes related to Lepton Flavour Violation. Search strategy in the LHC experiments, along with the reach in channels , , and are discussed.


This thesis defines the paradigms of social non-profitable science and technology projects based on scientific outlook on development.It analyses the characteristics of social non-profitable science and technology projects and holds the view that the scientific outlook on development has a comprehensive and directive meaning for their management.The connotation of the model mode of social non-profitable science and technology projects is thoroughly directed by scientific outlook on development,based on paradigms of scientism,humanism and empiricism.Its principles are "people-oriented,comprehensive,coordinated and sustainable,overall considered,lawful managed,rights standard,responsibility cleared and managements public opened."


In this paper, a UHF band blade antenna is presented especially for ELT beacons, used mainly for search and rescue operations supported by the COSAPS SARSAT satellite constellations. The detailed design procedure to achieve broadband behaviour and the parametric analysis of all the geometric parameters are discussed. Proposed antenna is developed on a FR4 substrate and its RF characterization is carried out. It has a 10dB return loss bandwidth of 60% at 406MHz. Proposed antenna is a linearly polarized antenna with gain better than 1.5dBi and cross polarization isolation better than 30dB throughout the band.


Objective: By constructing the cash flow model, it proposed the premium adjustment mechanism of critical illness insurance(CII). Methods: Based on the practical data of critical illness insurance in China, it established some actuarial assumptions and cash flow model to simulate and analyze premium adjustment mechanism of CII. Results:( 1) Because of the deterioration of critical illness incidence rate and the change of market interest rates, CII guaranteed premium usually resents pricing risk, which showed that the cash flow is negative, sometimes accumulated cash is negative;(2) based on the criteria of insurance cost adjustment,it is suggested that when the loss rate reached more than 70%, which could permit the insurance company adjust the premium, if the loss rate reached more than 80%, it needs to compulsory the insurance companies to adjust premium. Conclusion: The study proposes the mechanism of CII premium adjustment, provides guidance for practice.


Purpose
Many companies in the USA have corporate wellness programs but are having trouble encouraging employees to take part in these programs. Even with monetary incentives, many employees do not join. The purpose of this paper is to consider whether timely reminders combined with monetary incentives improve participation in health benefit programs.

Design/methodology/approach
Employees of a large manufacturing company across multiple facilities were encouraged to enroll in a messaging service. Once a week, members received an SMS or e-mail reminder to complete a Health Risk Assessment (HRA) and Health Action Plan (HAP). The authors segmented employees based on prior year health insurance plan choice and HRA participation to analyze current HRA and HAP completion, with and without intervention.

Findings
The intervention increased completion rates 6 percent for subgroups that completed the HRA in the prior year and 34–37 percent for those that did not.

Practical implications
Corporate wellness programs should develop good communication channels with employees. The effectiveness of such programs will depend also on employee engagement.

Originality/value
With better communication, companies could raise participation in corporate wellness programmes and potentially reduce some of the monetary incentives that they currently offer.


We investigate the scaling properties of the edge distribution of soap froth and compare it with the area scaling law. The data collapse for edge scaling of cells belonging to the same topological class is explained by a harmonic expansion of the energy of the froth with area-perimeter constraint. The edge scaling hypothesis is found to be comparable to area scaling. The implication on existing theories for the evolution of soap froth is discussed. 1 The scaling behavior of evolving soap froth has recently been the subject of many theoretical works 1,2]. There are two scaling behaviors that are observed in experiments. Stavans 3] has reported that not only the probability distribution (P n (t)) of the cells of given number of sides verses the number of edges (n) is independent of time over a long period of time, but also the distribution function of area is invariant in form over the same period: P(A; t) = f(x)= A with x = A= A and the time dependence only enters in the mean area A(t). These two time invariant distribution functions (P n and f(x)) deene the scaling regime in the literature 4]. According to the theoretical basis of area scaling 2], one also expects that similar scaling laws apply to the subset of cells with same number of edges. However, detailed experimental test of area scaling for individual topological class (i.e. cells with same n) has not been made. In this short note, we compare the quality of data collapse for soap froth using the area scaling with edge scaling for individual topological class. We nd that edge scaling is at least as good a description for experiments on soap as area scaling. Furthermore, there are physical reasons supporting the edge scaling description. We will examine three forms of scaling function. Firstly, one uses the original area scaling hypothesis. We test area scaling of individual topological class by assuming that the probability P A n (A n ; t) of nding an n?sided cell with area A n at time t among all n?sided cells to have the following form where (1) Note that P A n (A n ; t) is a function extracted from the histogram of area distribution of the n-sided bubbles at time t and the normalization is 1. This form of scaling function implies that a data collapse on a universal curve of F …


A millimeter-wave tunable notch filter using several extensions of the fundamental-mode rectangular waveguide has been developed to protect plasma diagnostics techniques from stray gyrotron radiation. The design utilizes the resonant behavior of the TE301 mode excited by cutoff coupling holes in a symmetrical smooth H-plane extension of waveguide. Proper choice of the shape and sizes of the coupling elements allows one to tune the operating frequency, notch depth, and notch band. Low-power experiments with the six-cavity filters show a maximal notch depth of below -120 dB at 70 and 170 GHz, and a notch depth of below -90 dB at frequency bands of 70 ± 0.05 and 170 ± 0.2 GHz. The filter design is rather simple and can be advanced into a higher frequency band up to the 400 GHz.


Sermon discourse is a discourse of speech that contains of religious matters. This kind of discourse usually contain of advises spoken to the community by a religious scholar. This kind of discourse affects on the interlocutors. In order to influence the interlocutors, the speaker of this discourse is believed to apply several kinds of speech acts. What kind of speech acts used in the discourse of Friday sermon is discussed in this paper. The method used in the data collection was a gathering method, meanwhile, the technique used was recording method. Based on the result, it is shown that the discourse of Friday sermon at Istiqlal Mosque, Jakarta, used three kinds of speech acts, such as: representative, directive, expressive, comissive, and confirmatory speech acts.

Keywords: speech act, sermon of Friday prayer


The senior represent a market of particular relevance for a large number of industries. These include the tourism sector as one of the biggest beneficiaries of the changes in the lifestyles of the population, currently more geared to the enjoyment than previous generations and therefore more likely to travel. This group stands out for its enormous potential, but also by its heterogeneity with regard to their condition of travelers. In this context, the aim of this paper is to analysis the factors influencing the travel decision for people over 55 years in Spain. To identify the variables that determine their travel trend an analysis binary logistic regression was used. The results reveal that beyond income and time available, travelling will be explained by a set of personal variables, such as the internal or perceived age, the stage of the life cycle in which they are located, the sociocultural level, which causes the differences between the different generational cohorts, and certain subjective variables which represent the main barriers for the senior trip. Those are called self-perceived factors. Finally, it is shown that there are many managerial implications of great importance for the tourism sector.


During the Covid-19 pandemic, people experienced many changes in their daily lives. These changes trigger stress and lead to depression in the community, especially among young adults, which is the main axis that leads to low subjective well-being. Various studies have shown that raising pets (dogs and cats) and plants (gardening) can improve an individual's subjective well-being. The study used a qualitative descriptive method with 10 subjects divided into three groups, namely the group of pets, the group of plants (gardening), and the group of pets and plants (gardening). All subjects in the three groups showed high subjective well-being through raising pets and plants (gardening) during the Covid-19 pandemic. All subjects show positive emotions and enjoyed raising pets and plants (gardening). In addition, most of the subjects also felt satisfied with their lives during the Covid-19 pandemic with the presence of pets and plants (gardening). All subjects felt the presence of pets as entertainers to provide motivation. For the subjects, plants (gardening) play a similar role, through the beauty and growth of the plants.


An integration of practice concepts is attempted throu gh the construction, from practice descriptions in the literature, of a compound, dynamic, three-stage model of practice in the social work group.


In this part we summarize the WS-* vs. REST debate by giving a quantitative technical comparison based on architectural principles and decisions. We show that the two approaches differ in the number of architectural decisions that must be made and in the number of available alternatives. This discrepancy between freedom-from-choice and freedom-of-choice explains the complexity difference perceived. However, we also show that there are significant differences in the consequences of certain decisions in terms of resulting development and maintenance costs. The comparison helps technical decision makers to assess the two technologies more objectively and select the one that best fits their needs: REST is well suited for basic, ad hoc integration scenarios, WS-* is more flexible and addresses advanced quality of service requirements commonly occurring in enterprise computing.


random biopsy, ultrasonography, computer tomo graphy, and bone scintigraphy are considered a rou tine part of the staging process. The invasive and metastatic behavior of bladder cancer depends on the depth of tumor invasion. We can grossly dif ferentiate superficial tumors, which are only occa sionally disseminated at first presentation, from muscle-invasive tumors, which in a significant per centage of cases are accompanied by regional or dis tant metastases. Both the diagnostic workup and the therapy differ significantly for these two groups, as will be discussed below. Only distinct staging procedures will enable us to develop statistically valid prognostic parameters, which in turn will help us to compare groups of pa tients treated at different institutions or with differ ent therapeutic measures. This means that the use of the TNM-oriented classification is essential. How ever, patient comfort, the prevalence of possible pathologic findings, and financial resources should also be considered. Finally, the value of new investi gational methods should be proven in a sample of adequate size, and precise conclusions must be drawn for or against such a staging procedure. Fail ure to do so would cause unnecessary and costly investigations to be performed as part of the routine staging process.


A case of progressive symmetric erythrokeratoderma (PSEK) associated with symmetric syndactylism is being reported. The interesting feature being the first time description of any association with PSEK.


Malignant cells are characterized by the ability to invade surrounding normal tissues. Tumor invasion is abetted by proteolytic enzymes that have been correlated with recurrent disease and metastasis. These enzymes are involved in a cascade of proteolytic interactions with other enzymes and inhibitors which allow cancer cells to dissolve surrounding extracellular matrix, thereby enabling the cells to rapidly invade adjacent tissues and migrate to metastatic sites distant from the primary tumor. Among these proteases are the plasminogen activators (PA), collagenase IV, faminase, and in some cases cathepsin D, which together mediate key steps in the invasion process of metastasis. Cells which have the selective advantage for invasion and metastasis are those capable of regulating their proteolytic activity and proliferation. Cells in the process of invasion would be probably down-regulated for proliferation, but subsequent to attachment and adhesion at a distant site, would then be in a proliferative mode, up-regulating DNA replication. Urokinase (uPA) can be present in the tissues in several molecular forms. The inactive proenzyme is a single chain protein (scuPA) that is cleaved at Lys. 158 to form the double chain, high molecular weight active form (HMW-uPA) of 54 kD. A low molecular weight form (LMW-uPA) can also be produced by cleavage of the HMW-U PA at Lys. 135 - Lys. 136 giving a 35 kD active enzyme. Recently, it has been shown that the HMW active form of urokinase, bound to the tumor cell membrane, is responsible for the local lysis of the extracellular matrix, hence the tissue invasion mechanism for metastasis (Andreasen et al, 19861. Receptor- (membrane) bound uPA is twice as efficient (catalytically) as free fluid-phase uPA. Tho unbound uPA and the LMW form is not responsible for most of the local dissolution of extracellular matrix in the immediate vicinity of the metastatic tumor cell. High levels of urokinase (greater than 3.49 ng/mg of total protein) extracted from breast tumor tissues have recently been shown, together with plasminogen activator inhibitor 1 (PAI-1), to be a good prognostic indicator for high risk of recurrence and shorter patient survival times. In this project, we have attempted to develop immunocytochemical methodologies for the clinical assessment of the expression of urokinase plasminogen activator, which has been implicated to be important for initial steps in tumor invasion, and to relate it to cell proliferation and DNA replication at the single-cell level.


The class Dothideomycetes is the largest and most ecologically diverse class of fungi, comprising endophytes, epiphytes, saprobes, human and plant pathogens, lichens, and lichenicolous, nematode trapping and rock-inhabiting taxa. Members of this class are mainly characterized by bitunicate asci with fissitunicate dehiscence, and occur on broad range of hosts in aquatic and terrestrial habitats. Since the last monograph of families of Dothideomycetes in 2013, numerous novel species, genera, families and orders have been discovered. This has expanded information which has led to the modern classification in Dothideomycetes. In this paper, we provide a refined updated document on families of Dothideomycetes with emphasis on Dothideomycetidae and Pleosporomycetidae. We accept three orders with 25 families and four orders with 94 families in Dothideomycetidae and Pleosporomycetidae, respectively. The new family Paralophiostomataceae is introduced in Pleosporales. Each family is provided with an updated description, notes, including figures to represent the morphology, list of accepted genera, and economic and ecological significances. We also provide an overall phylogenetic tree of families in Dothideomycetes based on combined analysis of LSU, SSU, rpb-2 and tef1 sequence data, and phylogenetic trees for each order in Dothideomycetidae and Pleosporomycetidae. Familylevel trees are provided for the families which include several genera such as Mycosphaerellaceae and Teratosphaeriaceae. Two new genera (Ligninsphaeriopsis and Paralophiostoma) are introduced. Five new species (Biatrisopora borsei, Comoclathris galatellae, Ligninsphaeriopsis thailandica, Paralophiostoma hysterioides and Torula thailandica) are introduced based on morphology and phylogeny, together with nine new reports and seven new collections from


This study examines the relationship between an endorsement of either free will or determinism and judgment of others' weight management behaviors in a general population. Participants completed the Free Will and Determinism – Plus (FAD-Plus) to assess their beliefs in free will or determinism. Two groups were compared for analysis: determinism, which includes both scientific and fatalistic variants, and free will, which includes randomness. After completing the FAD-Plus, participants answered questions regarding their judgment of weight management behaviors on one of two case vignettes designed by the investigator that depict different weight management behaviors and outcomes. Participants then answered questions involving the weight management behaviors depicted in the vignette. Participants also answered questions regarding their overall weight attitudes on the Anti-Fat Attitudes Scale. The hypotheses for this study follow: (a) Participants endorsing free will world views will more strongly judge, both positively and negatively, successful and unsuccessful weight management behaviors, respectively, compared to those endorsing a determinist worldview and (b) There will be a difference between dieters and nondieters on judgments of both successful and unsuccessful weight loss attempts on case vignettes. To assess the relationship between all variables, a multivariate analysis of covariance (MANCOVA) was completed.


The authors investigate potential asynchronous transfer mode virtual path operation systems (ATM VP OpS) with a special focus on the leased-line services that will encourage the smooth penetration of ATM networks. They describe ATM VP OpS requirements after clarifying leased-line operation scenarios. An object-oriented modeling method is presented for operation system implementation. A highly effective ATM VP OpS system architecture is outlined.<<ETX>>


We introduce and investigate some properties and characteristics of a certain three parameter class of A. In particular, some convolution properties and inclusion relations for the functions of class and are studied in this paper


There is more affirmation or negation to Feng Xuepfeng's translation of Marxism Literature Theory from the political perspective in the past.In fact,the academic significance of Feng's translation is more primary than its political one.Those who affirm(the left wing literary world and the later mainstream ideology) applauded Feng's great work as "smuggling weapons to slaves",and contributing to proletarian's revolution.Obviously,this is a behavior of admitting posthumously.Those who negate(the right wing literary world,"the freemen","the third people") judged Feng as a literary theorist "in uniform",and high handing the left wing literary world under the cover of Marxism Literary Theory.Both sides tend to excessively intensify and romance the political functions of Feng's translation,but to shield intentionally its academic significance.This article strives to flick away the ideological mist and display its academic significance.


Objective:To explore the therapeutic effect of external application of mupirocin ointment combined with insulin in decubitus ulcer.Methods:38 patients with decubitus ulcer were divided randomly into the treatment group and the control group,each group has 19 cases.in The treatment group were treated with mupirocin ointment combined insulin,the contrast group were treated with traditional methods including using 0.5% iodophor solution,3% hydrogen peroxide,moist burn ointment.Result: The effective rate of the treatment group was 100% in two weeks,while he control group was 68%,and the therapeutic effect of treatment group was remarkably higher than that of the contrast group(P 0.05).Conclusion:Mupirocin ointment combined with insulin has a good therapeutic effect on patients with Ⅱ and Ⅲ stage decubitus ulcer.


Thomas Burnet's Telluris theoria sacra and its English translation the Theory of the earth, published in two volumes between 1681 and 1690, was one of the most widely-discussed and controversial philosophical and theological works of late-seventeenth-century England. In it, Burnet attempted to trace the earth's history from the Creation, through the Deluge, Conflagration, and Millennium, to the final consummation. Despite its notoriety, a full, in-depth study of this work has yet to be produced in English. This thesis is a first step to providing such a study. The thesis is composed of six chapters. The first offers a detailed overview of the Theory's two volumes and their historical context. Chapter two examines its philosophical, theological, scriptural, and antiquarian foundations. The third chapter looks at two early responses to the work, Burnet's replies to these responses, and his hugely controversial supplement to the Theory, the Archaeologiae philosophicae, published in 1692. Chapter four examines the so-called "Burnet controversy", a proliferation of writings which emerged following the publication of the Archaeologiae and which attacked the Theory and proposed alternative philosophical accounts of the earth's history. The final two chapters explore the relationship between Burnet and two important Newtonians who were involved in the controversy, chapter five discussing William Whiston's 1696 New theory of the earth and the sixth and final chapter analysing John Keill's attack on and subsequent debate with Burnet.


The intense focus on Alzheimer's disease has led even experienced practitioners to misdiagnose older adults' cognitive impairment as Alzheimer's. The impact of misdiagnosis may be greatest in cases of capacity, especially conservatorship and testamentary capacity. Two case examples are presented, with an emphasis on diagnostic issues and the importance of accurate diagnosis in light of increasing cases of cognitive dysfunction in older adults. In the first case, issues of delirium and frailty were misdiagnosed as Alzheimer's disease, while in the second case, overreliance on family report and a lack of cultural competency caused a woman with mild cognitive impairment (executive functioning type) to be diagnosed with moderate Alzheimer's disease. As the older adult population grows, clinical gerontologists will continue to be called on to assess capacity, and accurate diagnosis is essential for accurate assessment.


ship found in the text, but more of a clarification based on the title. While deciding on what qualifies as a part of the region is certainly debatable, since boundaries are constructed, contested and forever shifting in people's geographical imaginations, areas typically categorized as located in the Caucasus, such as Georgia, Armenia and Azerbaijan, are not the primary concern of this book. While these three territories, sometimes labelled the south Caucasus or the trans-Caucasus, do generate some mention by Marshall, they are ancillary to his main focus: the north Caucasus. That being said, anyone interested in a thorough historical contextualization of both Russian imperial and Soviet influence in the north Caucasus region will find this text indispensable. This book is a bit esoteric for an undergraduate audience, unless students are taking a very specialized historical course. However, graduate students and scholars interested in the north Caucasus will find this a very useful source. Overall, Marshall's book is an important contribution to a topic with very few book-length studies.


In considering, the contribution that rural local institutions (RIS) can make to sustainable livelihoods (SLS) two important concerns are brought together that emerged among development practitioners in the 1990s-2000s. In methodological terms, the consideration is grounded in the many influences of context and also the effects of policies, laws and external interventions. Livelihoods as a central concern in development planning and evaluation have added concreteness and urgency to government, donor and nongovernmental organization efforts to reduce poverty. It was transparently observable in literature review that fewer rigors in dealing with this subject than anticipated were identified. While there have been some systematic, analytical treatments sustainable livelihoods, for the most part sustainable livelihoods are referred to rather abstractly usual in the aggregate and lacking any systematic typology. An important analytical element that is missing in the very fragmented literature that the researchers have been able to review on the relationships between rural local institutions (RLIS) and sustainable livelihoods (SLS) in some specification of what are the capabilities and functions of rural local institutions (RLIS) that can be expected and enhanced to increase the number, productivity and sustainability of livelihood opportunities.


In the analysis cold rolling processing principle's foundation,proposed that involue(straight tooth,helical tooth)components cold roll prineiple of design,introduced the semifinished materirals components technological parameter designation and the rolling round design variable design.


The figure of Luis de Carvajal matches at the same time and in the same place of El Greco. Carvajal, as all the painters of that time, was eclipsed by the shadow of the Cretan painter. This circumstance explains why he's still today an unknown and why his work, difficult to see and dispersed, is subject to more or less secure attributions. In 2006, the Junta de Comunidades de Castilla la Mancha bought a canvas about the imposition of the chasuble at san Ildefonso, supposedly by Luis de Carvajal. This fact serves as starting point to make a start on the day of the knowledge about his career and move forward on some issues that have gone more unnoticed, as the real relationship or not with the Greco models.


REFERENCES 1. Lo GH, ChenWC,Wang HM, et al. Low-dose terlipressin plus banding ligation versus low-dose terlipressin alone in the prevention of very early rebleeding of oesophageal varices. Gut 2009;58:1275e80. 2. Bruha R, Marecek Z, Prochazka V, et al. Double-blind randomized multicenter study comparing the efficacy and safety of 10-day to 5-day terlipressin treatment of bleeding esophageal varices. Hepatogastroenterology 2009;56:390e4. 3. Krag A, Bendtsen F, Pedersen EB, et al. Effects of terlipressin on the aquaretic system: evidence of antidiuretic effects. Am J Physiol Renal Physiol 2008;295:F1295e300. 4. Krag A, Møller S, Henriksen JH, et al. Terlipressin improves renal function in patients with cirrhosis and ascites without hepatorenal syndrome. Hepatology 2007;46:1863e71. 5. Escorsell A, Ruiz del Arbol L, Planas R, et al. Multicenter randomized controlled trial of terlipressin versus sclerotherapy in the treatment of acute variceal bleeding: the TEST study. Hepatology 2000;32:471–6. 6. Feu F, Ruiz del Arbol L, Banares R, et al. Double-blind randomized controlled trial comparing terlipressin and somatostatin for acute variceal hemorrhage. Variceal Bleeding Study Group. Gastroenterology 1996;11:1291–9. 7. Douriez E, Mollard P, Laval C, et al. Severe hyponatremia after repeated administration of terlipressin. Therapie 1993;48:518–9. 8. Dunwoodie E, Jowett S. Terlipressin causing a hyponatraemic seizure. Scand J Gastroenterol 2007;42:665.


In order to explore the factors affecting the strength of lightweight and high-strength foamed cement, ordinary Portland cement is used as the cementing material, and the target dry density is 400~410kg/m3 by controlling the content of foaming agent and foam stabilizer. Lightweight high-strength foamed cement specimen with strength of 4.4MPa. Controlling a single variable, the compressive strength and microscopic morphology changes of foamed cement specimens with different self-made reinforcing agent content and fly ash content were studied. The research results show that when the fly ash content is 20%, the strength of the sample without reinforcing agent reaches the best 2.4MPa; when 2wt% of the reinforcing agent is added, the strength of the sample reaches the maximum compressive strength of 4.4MPa, an increase of 83 %. Scanning electron microscope microscopic morphological observation results show that after adding the reinforcing agent, the foamed cement cell is more uniform, the cell wall becomes denser, and the cell defects are reduced, which explains the macroscopic advantages of lightweight and high-strength foamed cement.


In order to simultaneously consider mixed-frequency time series, their joint dynamics, and possible structural change, we introduce a time-varying parameter mixed-frequency vector autoregression (VAR). Time variation enters in a parsimonious way: only the intercepts and a common factor in the error variances can vary. Computational complexity therefore remains in a range that still allows us to estimate moderately large VARs in a reasonable amount of time. This makes our model an appealing addition to any suite of forecasting models. For eleven U.S. variables, we show the competitiveness compared to a commonly used constant-coefficient mixed-frequency VAR and other related model classes. Our model also accurately captures the drop in the gross domestic product during the COVID-19 pandemic.


Abstract The displacement rate of aryloxy substituents by methoxide ions in the following triphosphites: 2-phenoxy-1,3,2-dioxaphospholane (I), 2-methoxy-benz-1,3,2-dioxaphospholene (II), and dimethyl phenylphosphite (III), is for each phosphite higher in methanol than in dichloromethane. On the other hand, dichloromethane discriminates much more strongly between five-membered cyclic and acyclic phosphites than methanol, as shown by the following rate ratios cyclic/acyclic in CH3OH: I/III = 13, II/III = 2; and in CH2Cl2: I/III = 1.8 × 103, II/III = 1.1 × 103. Water, as nucleophile towards the same phosphites in deuteroacetone, appears to exhibit somewhat similar magnitude of discrimination as methoxide in methanol.


The aim of this prospective follow-up study was to investigate the role of trauma-related factors in the development of acute and chronic Posttraumatic Stress Disorder (PTSD) among South African gold mineworkers involved in disabling and reportable earth-fall mine accidents. A consecutive sample of 200 mineworkers who were involved in earth-fall mine accidents was evaluated over a period of seven months. A history of previous trauma exposure was associated with both acute and chronic PTSD. Injury severity predicted acute PTSD but could not differentiate between subjects with acute PTSD that developed chronic PTSD and those whose symptoms went into remission. The intensity and severity of the precipitating earth-fall event were associated with acute and chronic PTSD. Being pinned down by rocks was the earth-fall-related event that predicted chronic PTSD most accurately. The intensity of the traumatic earth-fall event was found to be a more significant predictor for acute PTSD than previous exposure to trauma. Based on these results, recommendations were made to manage trauma in the mining sector.