Scabies presenting with bullous pemphigoid-like lesions

A wide range of clinical manifestations may be seen in scabies, from classic pruritic papules and burrows to secondary features such as impetigo. Bullus lesions are a less frequent. Twenty cases of scabies presenting with bullae have been reported so far in the medical literature. Differentiating this subtype of scabies from the immunobullous disease bullus pemphigoid is a diagnostic challenge. A 42-year-old man was referred to our dermatology outpatient clinic with 3-month history of severe pruritus and tense blisters affecting mainly the lower trunk, arms and legs. An initial biopsy was suggestive for bullous pemphigoid. Close physical examination revealed small excoriated papules and a few burrows on borders of the hands and wrists. Skin scraping of the lesions on wrists was positive for Sarcoptes scabiei. Another biopsy specimen from a recent blister revealed subepidermal bullae with fibrin and inflammatory cells, particularly eosinophils. Direct immunofluorescence exam was negative. The patient was treated with lindane lotion followed by crotamiton cream with near complete resolution of the lesions. Scabies must be considered in patients presenting with recent onset of unexplained pruritic bullous lesions. Biopsy and immunofluorescence studies together with skin scrapings for Sarcoptes scabiei could help to differentiate these cases from bullous pemphigoid. Antiscabietic treatment results in resolution of bullous lesions in the affected patients. © 2006 Dermatology Online Journal

Insider trading and the forecast of future stock returns—Study on Chinese stock market

自从2006年新的《证券法》施行以来，在高度繁荣的金融市场中，内部人交易作为影响股票市场波动的重要因素越来越受关注。本文研究的重点就在于内部人交易对股票市场预期收益的预测。通过对2006年到2014年间的中国股票市场数据进行分析研究，本文在内部人总交易净次数这一指数的基础上，又建立了一个全新的内部人总交易净市值指数，不同于单纯考虑交易次数的行为，在新指数中充分考虑了市场价格和交易量因素，从市场资金量的方面定义新指数，更加精确的预测股票市场未来的收益波动。通过对内部人总交易净次数和净市值这两项不同指数在不同期限长度下，利用线性模型预测股票市场超额预期收益，本文分别采用过去1个月、3个月、6个月、...The focus of this paper is whether insider trading has important impact on the future return of the stock market, and how much effect this paper can predict. Based on the China stock market data from 2006 to 2014, this paper first uses the aggregate net number of insider trading to design models in different periods. But most importantly, this paper designs a new index named aggregate net market v...学位：经济学硕士院系专业：王亚南经济研究院_金融学(含保险学)学号：2772012115261

Marine food web dynamics of small-sized pelagic fish in the Caspian Sea (Iranian’s water)

A mass-balance Ecopath model of coastal areas in the Caspian Sea has been constructed for a quantitative description of the trophic structure of the ecosystem. The model is used to estimate the important biological parameters and relationships among the different ecologically important groups. Twenty five species were used in the present analysis. The model is based on the data collected of Kilka fisheries, beach seining (Bony fish fisheries), and set Gillnet (Sturgeon Fisheries) and also dietary information. Total landings along the Iranian portion of southern Caspian coast reached 39647 t, including sturgeon (41 t), kilka (22873 t) and bony fishes (16733 t) in 2014. Two species of kilka (Common kilka and Anchovy) are important commercially in the Caspian Sea, together accounting in the past decade for > 60 % of the total catch, as well as being a crucial part of the food chain. The mean average trophic level was estimated at 3.17 by Ecopath software. In this research, the mean level were studied between eight species varied from 2.56 to 4.04, Sander lucioperca occupy the highest and the as vimba vimba was the lowest level. The ranges of total mortality varied from 0.5 to 2.56 per years. The food consumption rate was estimated about 101.56 per year Mixd trophic level index (MTI) showed small pelagic fishes as prey, have crucial role in feeding of pelagic predators population such as invasion of the ctenophore Mnemiopsis leidyi, bream fish and benthic fish such as sturgeon. In general, niche overlap was greater in more species such as Alburnus chalcoides, Rutilus rutilus, Clupeonella cultriventris, Rutilus kutum and M. leidyi who consumed large amounts of plankton. In conclusion small pelagic fish exert a major control on the trophic dynamics of the Caspian Sea ecosystems and constitute midtrophic-level populations

Examining the generalizability of research findings from archival data

This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching the original reports together with 55% of tests in different spans of years and 40% of tests in novel geographies. Some original findings were associated with multiple new tests. Reproducibility was the best predictor of generalizability-for the findings that proved directly reproducible, 84% emerged in other available time periods and 57% emerged in other geographies. Overall, only limited empirical evidence emerged for context sensitivity. In a forecasting survey, independent scientists were able to anticipate which effects would find support in tests in new samples

Examining the generalizability of research findings from archival data

This initiative examined systematically the extent to which a large set of archival research findings generalizes across contexts. We repeated the key analyses for 29 original strategic management effects in the same context (direct reproduction) as well as in 52 novel time periods and geographies; 45% of the reproductions returned results matching the original reports together with 55% of tests in different spans of years and 40% of tests in novel geographies. Some original findings were associated with multiple new tests. Reproducibility was the best predictor of generalizability—for the findings that proved directly reproducible, 84% emerged in other available time periods and 57% emerged in other geographies. Overall, only limited empirical evidence emerged for context sensitivity. In a forecasting survey, independent scientists were able to anticipate which effects would find support in tests in new samples

Application of health belief model to predict COVID-19-preventive behaviors among a sample of Iranian adult population

BACKGROUND: The novel coronavirus (COVID-19) has infected nearly 9.5 million people in 216 countries, areas, or territories in the world. The fight against the COVID-19 has become a very serious international challenge. The aim of this study was to determine the predictors of COVID-19-preventive behaviors using the health belief model (HBM). MATERIALS AND METHODS: This cross-sectional study was conducted with the participation of 558 samples from the adult population of Iran. The online convenience sampling was conducted in this research. The online 68-item questionnaire link was published all over Iran through social networks including Telegram and WhatsApp, which are common in Iran. The data were analyzed using SPSS software version 19. Descriptive statistics, bivariate Pearson's correlation test, and multiple linear regression were used to analyze the data. RESULTS: The mean age of the subjects was 33.3 +/- 10.01 years. The participants were often female (61.3), married (57.9), and resident of the city (81.0) with university educational level (78.8). The results showed that the HBM structures predicted 29.3 of the preventive behaviors of COVID-19 in the subjects. The perceived benefits, perceived barriers, and self-efficacy significantly predicted the preventive behaviors, but the perceived susceptibility and perceived severity were not significant in the regression model. The internet and virtual social networks (49.8), broadcast (33.5), and healthcare providers (15.8) were the most important sources of information related with COVID-19. In response to COVID-19-related internal cues to action, 36.6 did not pay attention and 34.7 tried to self-medicate. Only 28.5 of the subjects referred to the hospital, healthcare center, or physician. CONCLUSION: Self-efficacy, perceived barriers, and perceived benefits were the key determinants of COVID-19-preventive behaviors in the subjects. It can be concluded that the HBM is a good tool to predict COVID-19-preventive behaviors in Iranian population

Removal of TPHs from Soil Media using Persulfate Oxidant in the Presence of Mineral Siderite

The objective of the present study was to evaluate the potential of persulfate (PS) oxidant in the presence of mineral siderite (SI) for remediation of fuel oil contaminated soils. Clay and sandy soils were selected as representative soils which were spiked with 5000 mg fuel oil per kilogram of dry' soil. The efleets of controlling factors such as different persulfate concentrations (100-500 mM), siderite concentrations (0.1-0.5 g), pH (3-9), and temperature (20-60 degrees C) were also investigated. The results indicated that in clay and sandy soil samples, the highest total petroleum hydrocarbon (TPHs) degradation was observed in the following condition: pH= 3, soils temperature =60 degrees C and PS/Fe (II) molar ratio = 400 mM/0.4 g and 300 mM/0.3 g in clay and sandy soil, respectively. Based on our findings, using persulfate oxidation in the presence of siderite as an activator is a promising technique to remediate soil contaminated by petroleum hydrocarbons

Prevalence and causes of hysterectomy among women referring to Dr. Shabikhani Maternity Hospital in Kashan, 1374-75

History and Objectives: Hysterectomy (Removal of uterus) is one of the common surgical operations in females. Due to the importance of determination of its prevalence and causes in health care and therapeutic programs and lack of corresponding data in Kashan, this study was conducted to establish the prevalence and causes of hysterectomy among patients referring to Dr. Shabihkhani maternity hospital in Kashan in 1374-1375. Materials and Methods: A descriptive study was performed on 150 women referring Dr. Shabihkhani maternity hospital for hysterectomy. Data including age, job, marital status, educational level, parity, menopausal status, technique of operation, preoperative diagnosis on the basis of physical examination, laboratory examinations and pathologic reports were recorded in corresponding questionnaires. Finally, after extraction and classification of the information, they were statistically described. Results: This study showed that hysterectomy accounts for 5.9 of all surgical operations in women in this center. 44.7 of patients were 45-55 years old. 56.6 of women had history of one of 5 childbirths, which comprised the largest group among patients. Abdominal hysterectomy was performed in 90.6 of patients and the remainder undergone vaginal hysterectomy. The most common causes of hysterectomy were leiomyoma (49.3) abnormal uterine bleeding (28.6) and pelvic laxation (12.6). Abnormal pelvic examination was reported in 117 patients (78) and in 33 women (22) pelvic examination failed to detect the involved site. 71.3 of patients had laboratory examination and the remaining 28.7 did not have. Pathologic report was abnormal in 60 and normal in 40 of patients. Conclusion: Leiomyoma, abnormal uterine bleeding and pelvic laxity constitute the common causes of hysterectomy. Analytical studies are recommended to determine the contribution of different factors in order to prevent unnecessary hysterectomies

Evaluation of phosphate removal from aqueous solution using metal organic framework; isotherm, kinetic and thermodynamic study

BackgroundPhosphate (PO43-) is the main etiological factor of eutrophication in surface waters. Metal organic frameworks (MOFs) are novel hybrid materials with amazing structural properties that make them a prominent material for adsorption.MethodsZeolitic imidazolate framework 67 (ZIF-67), a water stable member of MOFs, with a truncated rhombic dodecahedron crystalline structure was synthesized in aqueous environment at room temperature and then characterized using XRD and SEM. PO43- adsorption from synthetic solutions using ZIF-67 in batch mode were evaluated and a polynomial model (R-2: 0.99, R-adj(2): 0.98, LOF: 0.1433) developed using response surface methodology (RSM).ResultsThe highest PO43- removal (99.2) after model optimization obtained when ZIF-67 dose, pH and mixing time adjusted to 6.82, 832.4mg/L and 39.95min, respectively. The optimum PO43- concentration in which highest PO43- removal and lowest adsorbent utilization occurs, observed at 30mg/L. PO43- removal eclipsed significantly in the presence of carbonate. The equilibrium and kinetic models showed that PO43- adsorbed in monolayer (q(max): 92.43mg/g) and the sorption process controlled in the sorption stage. Adsorption was also more favorable at higher PO43- concentration, according to the separation factor (K-R) graph. Thermodynamic parameters (minus signs of G degrees, H degrees of 0.179 KJ/mol and S degrees of 44.91 KJ/mol.K) demonstrate the spontaneous, endothermic and physisorption nature of the process.ConclusionHigh adsorption capacity and adsorption rates, make ZIF-67 a promising adsorbent for PO43- removal from aqueous environment