CLINICAL VALUE OF SERUM TUMOR SUPPLIED GROUP OF FACTOR IN DIAGNOSIS OF EPITHELIAL OVARIAN CANCER

Objective: To evaluate the clinical value of serum tumor supplied group of factor (TSGF) in diagnosis of epithelial ovarian cancer. Methods: The serum TSGF was tested in 69 patients with epithelial ovarian cancer, 28 patients with benign ovarian lesion and 61 healthy women. The serum levels of vascular endothelial growth factor (VEGF) and CA125 were determined in patients with epithelial ovarian cancer and in those with benign ovarian lesion. The correlations of TSGF with VEGF and CA125 were investigated. Results: The serum level of TSGF in patients with epithelial ovarian cancer was obviously higher than in patients with benign ovarian lesion and in healthy women (P<0.01). The serum level of TSGF in patients with epithelial cancer was associated with stage and grade. TSGF was highest in stage III, followed by stage IV, and was lowest in stage I-II. The TSGF level was lower in well-differentiated tumors and was higher in poorly differentiated tumor. There were no significant difference among diagnostic value of TSGF, VEGF, and CA125 in differentiation between epithelial ovarian cancer and benign ovarian lesion (P>0.05). The serum level of TSGF and VEGF and CA125 in patients with epithelial ovarian cancer showed positive correlation (P<0.01, P<0.05, respectively). Conclusion: There is no marked difference in diagnostic value among TSGF, VEGF and CA125. TSGF has a certain value in diagnosis of epithelial ovarian cancer, and is helpful to distinguish epithelial ovarian cancer from benign ovarian lesion.

Origin and controlling factors of chlorite coatings—an example from the reservoir of T_3x Group of the Baojie area,Sichuan Basin,China

The study of the chlorite coatings always attracts scholars in China and other countries because the chlorite coatings play an important role in the preservation of residual primary pores in sandstone reservoirs.At present,the study of the origin and the controlling factors is relatively few.The occurrence,time of formation,genesis,controlling factors,and the mechanism of chlorite coatings inhibiting quartz overgrowths were studied in detail with thin section and SEM analysis.Samples were from the sandstone reservoirs of the T3x Group in the Baojie area,the transitional zone from the middle to the south of Sichuan Basin.The results indicate that the chlorite coatings on the walls of the pore spaces are oriented perpendicular to grain surfaces in the form of isopachous(even-thickness) grain-coating,while the chlorite coatings at the contacts between adjacent detrital grains are arranged with a preferred orientation tangential to the surface of detrital grains.The chlorite coatings were formed in the eogenetic stage.They were formed by recrystallization of Fe-rich clay films during the syndepositional period,and chlorite cements would be recrystallized after the coatings’ formation.The formation of chlorite coatings was mainly controlled by the depositional environment,provenance conditions,and diagenetic environment.The presence of chlorite coatings could result in the preservation of primary pores in deeply buried sandstone reservoirs by effectively inhibiting quartz overgrowths and the development of compaction and pressure solution.

Seroprevalence of <i>Brucella</i>Antibodies and Risk Factors Associated with Human Brucellosis in High-Risk Occupational Groups of the Noun Division in the West Region of Cameroon

Brucellosis is an anthropozoonotic disease with an important public health impact. Although the transmission of Brucella from animals to humans can occur in different epidemiological settings of sub-Saharan African countries, little data has been published on human brucellosis. This study aimed to detect Brucella antibodies and the risk factors associated to brucellosis among high-risk occupational groups of people in the Noun Division of Cameroon. For this study, a structured questionnaire was used to assess risk factors associated with human brucellosis. Thereafter, blood samples were collected from high-risk occupational groups of people in four villages. Plasma was extracted from each sample and Brucella antibodies were detected using Rose Bengal Plate Test (RBPT) and indirect Enzyme-Linked Immunosorbent Assay (i-ELISA). Of the 273 participants enrolled, the overall seroprevalence of Brucella antibodies was 12.45% with RBPT and 10.26% with i-ELISA test. This seroprevalence was significantly (P = 0.04;X2 = 9.73) higher among livestock herdsmen (15.8%), slaughterhouse workers (9.8%), butchers (4.8%), participants having no educational level (14.3%) and those experiencing above 5 years of risky activity (15%). Raw milk consumption (OR: 4.8;P = 0.001), no formal education (OR: 6.4;P = 0.03) and assistance of animal during parturition (OR: 7.2;P < 0.0001) appeared as factors that may increase the risk of Brucella infections. The detection of Brucella antibodies indicates the risk of human brucellosis in some groups of people of the Noun division. Consuming unpasteurized milk, participating in parturition and lacking knowledge on brucellosis appeared as risk factors associated with human brucellosis in western Cameroon. It raises the need of developing and implementing control measures for human and animal brucellosis.

The Influencing Factors and Inter-Group Differences for Urban Residents' Behavior of Consuming Edible Vegetable Oil

To clarify the determinant factors and inter-group differences of Chinese urban residents' edible vegetable oil consuming behavior is very important for us to understand their consumption features of edible vegetable oil,so as to guide their consuming behavior and improve China's vegetable oil industry security.In this article,urban residents of China's three traditional vegetable oil main production areas have been chosen as study objects,and multiple linear regression and one-way ANOVA have been used to do empirical analysis on the determinant factors and inter-group differences of their edible vegetable oil consuming behavior.The results indicate that the edible vegetable oil consuming behavior of urban residents from China's three traditional vegetable oil main production areas show a trend of diversification;" publicity measures"," preference evaluation"," personal characteristics" and " family characteristics" remarkably affect urban residents' edible vegetable oil consuming behavior and show obvious provincial characteristics.In addition,urban residents from different groups show differences in terms of " publicity measures" and " preference evaluation".

Full-Rank Factoring of Elementary 2-Groups with Equal Size Factors

In order to answer a question motivated by constructing substitution boxes in block ciphers we will exhibit an infinite family of full-rank factorizations of elementary 2-groups into two factors having equal sizes.

Non-Full Rank Factorization of Finite Abelian Groups

Tilings of p-groups are closely associated with error-correcting codes. In [1], M. Dinitz, attempting to generalize full-rank tilings of ?Zn2??to arbitrary finite abelian groups, was able to show that if p &ge;5, then?Znp? admits full-rank tiling and left the case p=3, as an open question. The result proved in this paper the settles of the question for the case p=3.

ABO Blood Groups and Their Relationship with Coagulation Factor VIII in Healthy Adults

Background: ABO blood group distribution defers with racial and geographic variations. They are related to diseases like cardiovascular diseases, cerebral thromboembolism. ABO blood group system may influence coagulation factor VIII which may increase the future risk of thrombosis. Aim: To assess the relation of ABO blood group with coagulation factor VIII in healthy adults. Material and Methods: A prospective type of analytical cross-sectional study was conducted in the Department of Physiology, Dhaka Medical College, Dhaka from July 2019 to June 2020. After obtaining ethical clearance, a total of 190 healthy adults were selected from different areas of Dhaka city based on inclusion and exclusion criteria, with ages ranging from 18 - 45 years. The subjects were interviewed and detailed history regarding personal, family, medical and drug were taken. Prior to sample collection, informed written consent was taken from the participants. Individuals of blood group A were selected as group A, blood group B as group B, blood group AB as group AB and blood group O as group O. Coagulation factor VIII was measured in the Department of Hematology and BMT Unit, Dhaka Medical College Hospital, Dhaka. Blood grouping was done in the Department of Physiology, Dhaka Medical College, Dhaka. Statistical Analysis: For statistical analysis, ONE way ANOVA followed by Bonferroni test were considered using SPSS 25.0 version. Results: In this study, blood group B was most common (33.2%). Coagulation factor VIII was significantly higher (p < 0.001) in blood group A (105.76% ± 11.82%), B (112.00% ± 15.02%), AB (109.80% ± 11.93%) than blood group O (82.00% ± 12.86%). No significant difference was observed among A, B and AB blood groups regarding coagulation factor VIII. Conclusions: It can be concluded that blood group A, B, AB individuals may have more chance of thrombosis due to significantly higher coagulation factor VIII than blood group O individuals.

Factoring Elementary p-Groups for p ≤ 7

It is an open problem if an elementary p-group of rank k ≥ 3 does admit full-rank normalized factorization into two of its subsets such that one of the factors has p elements. The paper provides an answer in the p ≤ 7 special case.

Revising Space Groups from Simulated SHELXfcf Structure Factors. More Examples of Incorrect Space Groups, an Example of a Chemically-Incorrect Structure and the Special Case of Pgl to PRevisions

The structure factors of any crystal structure can be simulated from its atomic coordinates (and temperature factors) in a SHELXL-97 run on a dummy hkl in which only the scale factor is refined. The squares of the structure factors are retrieved from the fcf, and such simulated data are used in the revision of the space groups of several incorrectly-refined crystal structures. Two cases, a P1 to P1 revision and a chemically-incorrect structure that is refined in a correct space group, are discussed.

基于组基轨迹模型的全膝关节置换术病人心理弹性轨迹及影响因素

目的:追踪全膝关节置换术后病人心理弹性的动态变化,并探究轨迹的相关影响因素。方法:选取2022年7月—2023年2月青岛市某三级甲等医院关节外科接受全膝关节置换术的病人为研究对象,在病人入院当天、术后3 d、术后2周拆线当日、术后1个月复诊当日、术后3个月复诊时调查病人的心理弹性水平,使用组基轨迹模型识别心理弹性变化轨迹及轨迹类别,采用多元Logistic回归分析不同轨迹的影响因素。结果:经模型拟合,最后得出4条不同的心理弹性轨迹,分别为低心理弹性平稳组、中心理弹性平稳组、低心理弹性下降组、高心理弹性上升组。多元Logistic回归分析结果显示,文化程度、领悟社会支持、正负性情绪为全膝关节置换术病人心理弹性轨迹的影响因素(P<0.05)。结论:全膝关节置换术病人心理弹性存在4个异质性轨迹亚组,且随时间而发生变化,但大多数病人在术后可以保持平稳水平。文化程度、领悟社会支持、正负性情绪为病人心理弹性的影响因素。

Temporal and spatial distribution of phytoplankton functional groups and role of environment factors in a deep subtropical reservoir

Phytoplankton and environment factors were investigated in 2015 and phytoplankton functional groups were used to understand their temporal and spatial distribution and their driving factors in Wanfeng Reservoir. Seventeen functional groups(B, D, E, F, G, J, Lo, MP, P, S1, T, W1, W2, X1, X2, Xph, Y) were identified based on 34 species. The dominant groups were: J/B/P/D in dry season, X1/J/Xph/G/T in normal season and J in flood season. Phytoplankton abundance ranged from 5.33×10~4 cells/L to 3.65×10~7 cells/L, with the highest value occurring in flood season and lowest in dry season. The vertical profi le of dominant groups showed little differentiation except for P, which dominated surface layers over 20 m as a result of mixing water masses and higher transparency during dry season. However, the surface waters presented higher values of phytoplankton abundance than other layers, possibly because of greater irradiance. The significant explaining variables and their ability to describe the spatial distribution of the phytoplankton community in RDA diff ered seasonally as follows: dry season, NH4-N, NO_3-N, NO_2-N, TN:TP ratio and transparency(SD); normal season, temperature(WT), water depth, TN, NH4-N and NO_3-N; flood season, WT, water depth, NO_3-N and NO_2-N. Furthermore, nitrogen, water temperature, SD and water depth were significant variables explaining the variance of phytoplankton communities when datasets included all samples. The results indicated that water physical conditions and hydrology were important in phytoplankton community dynamics, and nitrogen was more important than phosphorus in modifying phytoplankton communities. Seasonal differences in the relationship between the environment and phytoplankton community should be considered in water quality management.

Emodin regulating excision repair cross-complementation group 1 through fibroblast growth factor receptor 2 signaling

AIM: To investigate the molecular mechanisms underlying the reversal effect of emodin on platinum resistance in hepatocellular carcinoma. METHODS: After the addition of 10 μmol/L emodin to HepG2/oxaliplatin (OXA) cells, the inhibition rate (IR), 50% inhibitory concentration (IC 50 ) and reversal index (IC 50 in experimental group/IC 50 in control group) were calculated. For HepG2, HepG2/OXA, HepG2/OXA/T, each cell line was divided into a control group, OXA group, OXA + fibroblast growth factor 7 (FGF7) group and OXA + emodin group, and the final concentrations of FGF7, emodin and OXA in each group were 5 ng/mL, 10 μg/mL and 10 μmol/L, respectively. Single-cell gel electrophoresis was conducted to detect DNA damage, and the fibroblast growth factor receptor 2 (FGFR2), phosphorylated extracellular signal-regulated kinase 1/2 (p-ERK1/2) and excision repair cross-complementing gene 1 (ERCC1) protein expression levels in each group were examined by Western blotting. RESULTS: Compared with the IC50 of 120.78 μmol/L in HepG2/OXA cells, the IC 50 decreased to 39.65 μmol/L after treatment with 10 μmol/L emodin; thus, the reversal index was 3.05. Compared with the control group, the tail length and Olive tail length in the OXA group, OXA + FGF7 group and OXA + emodin group were significantly increased, and the differences were statistically significant (P < 0.01). The tail length and Olive tail length were lower in the OXA + FGF7 group than in the OXA group, and this difference was also statistically significant. Compared with the OXA + FGF7 group, the tail extent, the Olive tail moment and the percentage of tail DNA were significantly increased in the OXA + emodin group, and these differences were statistically significant (P < 0.01). In comparison with its parental cell line HepG2, the HepG2/OXA cells demonstrated significantly increased FGFR2, p-ERK1/2 and ERCC1 expression levels, whereas the expression of all three molecules was significantly inhibited in HepG2/ OXA/T cells, in which FGFR2 was silenced by FGFR2 shRNA. In the examined HepG2 cells, the FGFR2, p-ERK1/2 and ERCC1 expression levels demonstrated increasing trends in the OXA group and OXA + FGF7 group. Compared with the OXA group and OXA + FGF7 group, the FGFR2, p-ERK1/2, and ERCC1 expression levels were significantly lower in the OXA + emodin group, and these differences were statistically significant. In the HepG2/OXA/T cell line that was transfected with FGFR2 shRNA, the FGFR2, p-ERK1/2 and ERCC1 expression levels were significantly inhibited, but there were no significant differences in these expression levels among the OXA, OXA + FGF7 and OXA + emodin groups. CONCLUSION: Emodin markedly reversed OXA resistance by enhancing OXA DNA damage in HepG2/OXA cells, and the molecular mechanism was related to the inhibitory effect on ERCC1 expression being mediated by the FGFR2/ERK1/2 signaling pathway.

Risk Factors for Group B <i>Streptococcus</i>Colonization and Drugs Sensitivity Pattern in a Nigerian Obstetric Population

Background: Group B Streptococcus (GBS) is a major cause of bacterial infections in the perinatal period, of which colonization prevalence among Northern-Nigerian pregnant women is scarce. We attempted to determine 1) its prevalence, 2) risk factors for GBS colonization and 3) drugs-susceptibility. Methodology: This cross-sectional study involved 185 pregnant women between 35 - 37 weeks of gestation at tertiary health center of Sokoto, Nigeria. Vaginal/rectal swabs were collected, were cultured for GBS and tested for drug-susceptibilities. The study was conducted between December, 2017 and April, 2018. Results: One hundred and eighty five (185) pregnant women participated in this study. GBS vaginal-colonization-rate was 3.8% (7/185). A significance relationship was observed between GBS-colonization and socio-economic class, as 57.10% (4/7) of the GBS positive women were of low-socio economic class (p 0.035). No associations were observed between GBS-colonization and the followings: maternal age, parity, poor obstetric outcome-history. All the 7 GBS positive cultures were sensitive to Clindamycin. One was sensitive to both Clindamycin and Ceftriaxone. None was sensitive to Penicillin. Conclusion: The prevalence of GBS colonization was low in this area. Maternal socio-economic class is found to be a risk of GBS-colonization.

密度导向的点云动态图卷积网络

针对现有主流网络对于点云局部特征提取的能力不足,以及在特征提取过程中未考虑点云密度的问题,提出一种密度导向的点云动态图卷积网络.首先提出点云局部密度指数的概念,衡量点及其邻域点在相应的空间位置中的密集程度;然后利用局部密度指数动态赋予每个点一个膨胀因子,提出密度导向的动态点分组方法对点云构建局部图结构,对每个局部图结构构造动态边缘卷积模块进行特征的提取与聚合,既提取了点云的几何特征,又实现了置换不变性;最后采用残差网络的思想优化图神经网络的过平滑问题.实验结果表明,在分类数据集ModelNet40与ScanObjectNN上,所提网络的分类准确率分别为93.5%和82.2%;在分割数据集ShapeNet与S3DIS上,该网络的平均交并比分别为85.6%和60.4%,均高于DGCNN等主流网络;所提网络在多项任务中的精度都得到显著提升,且在处理密度不均的点云时有较好的鲁棒性,验证了所提算法的可行性与有效性.

信息茧房效应下用户群体极化形成机理研究

智能媒体时代下,进一步探究信息茧房效应对用户群体极化行为意愿的影响,能为构建良好的社交媒体平台生态提供建议。文章基于“刺激-机体-反应”框架与信息生态理论,从信息茧房的同质化特征内涵出发,分析信息茧房形成机理并构建信息茧房效应下用户群体极化作用机理模型,利用问卷调查收集样本,通过结构方程模型展开实证研究。研究结果显示,信息同质化、选择性接触、群际情绪和社会比较频率在用户群体极化行为意愿形成过程中发挥重要作用。同时,用户态度极化也是信息茧房效应下用户群体极化行为意愿的影响因素。

CCCG-ALL-2015方案治疗儿童急性淋巴细胞白血病复发的危险因素分析

目的分析儿童急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)经中国儿童肿瘤协作组急性淋巴细胞白血病2015方案(Chinese Children's Cancer Group ALL-2015 protocol,CCCG-ALL-2015)治疗后的累积复发率(cumulative incidence of relapse,CIR),并探讨影响复发的危险因素。方法回顾性分析2015年1月—2019年12月接受CCCG-ALL-2015方案治疗的852例患儿的临床资料,计算CIR并分析影响儿童急性B淋巴细胞白血病(B-ALL)复发的危险因素。结果852例ALL患儿中,146例(17.1%)发生复发,8年CIR为(19.8±1.6)%。B-ALL与急性T淋巴细胞白血病患儿的8年CIR比较差异无统计学意义(P>0.05)。146例复发患儿中,复发时间主要集中于极早期(62例,42.5%)和早期(46例,31.5%),极早期单纯骨髓复发42例(28.8%),早期单纯骨髓复发27例(18.5%)。Cox比例风险回归模型分析显示,融合基因MLLr阳性(HR=4.177,95%CI:2.086~8.364,P<0.001)和第46天微小残留病≥0.01%(HR=2.013,95%CI:1.163~3.483,P=0.012)是B-ALL患儿经CCCG-ALL-2015方案治疗后复发的危险因素。结论儿童ALL经CCCG-ALL-2015方案治疗后仍有较高的复发率,以极早期和早期单纯骨髓复发常见;第46天微小残留病≥0.01%、融合基因MLLr阳性与B-ALL复发密切相关。

企业基础研究决策的同群效应及影响因素

以2013-2022年中国沪深A股制造业和信息技术业上市企业为样本,实证检验基础研究的同群效应的存在性、模仿路径及其影响因素。研究发现,企业基础研究决策受行业内其他企业的影响,即存在行业同群效应,其模仿路径呈现出一定的先内后外规律。企业所处的竞争地位越高,既往基础研究经验越丰富,其基础研究决策越容易受到行业同群的影响。相较于非国有企业,国有企业基础研究决策受同群企业影响程度较高。研究进一步发现,企业基础研究决策同群效应对企业创新绩效有正向促进作用。研究发现为更好地理解企业基础研究的外在驱动力,并为鼓励企业开展基础研究与完善中国基础研究政策体系提供思路参考。

土壤原生生物的生态功能及其影响因素

【目的】土壤原生生物是指土壤中除植物、动物和真菌以外的所有真核生物,具有明显的系统发育和功能多样性特征,是地下生态系统的关键组成部分之一。与原核生物(细菌与古菌)和真菌相比,原生生物在土壤食物网中的作用常被忽视。本文系统论述了土壤原生生物的多样性及其生态功能,并综述了土壤养分、水分、pH、温度、重金属、微塑料等因子对土壤原生生物的影响,旨在阐明原生生物对土壤养分转化、土壤食物网和植物健康的生态作用及对主要环境因子的响应。【进展】土壤原生生物的数量、大小与形态各异,且营养级类群多样性丰富,它们可作为光合藻类、微生物捕食者、植物与动物的寄生者,在土壤食物网中扮演重要角色。光合型原生生物除潜在提高土壤氧浓度外,对陆地生态系统的碳储存具有重要贡献。消费型原生生物可通过捕食改变微生物群落,推动土壤微生物环,抑制植物病害,并提高植物性能。寄生型原生生物常被认为对宿主具有负面效应,如改变动物多样性,并引起植物病害。然而,寄生型原生生物对推动养分(如磷)循环也有贡献,且对植物的叶际细菌具有生防功能。总的来看,原生生物推动了陆地生态系统物质循环与能量流动向更高营养级的转移,并在土壤食物网中占据中心位置,发挥着关键生态功能。【展望】未来可从原生生物多样性特征及其维持机制、原生生物与其他土壤微生物或动物(如蚯蚓、线虫等)的互作与代谢关系、原生生物对土壤食物网物质循环与能量流动的贡献及相关影响因素进行深入研究。此外,原生生物生防剂的资源开发与应用,将利于缓解土壤与植物农药残留,也对保障土壤健康及其可持续利用与发展具有重要意义。

儿童静脉输液装置选择证据转化障碍和促进因素分析

目的:探讨儿童静脉输液装置选择的相关证据在临床转化的潜在障碍和促进因素,为拟定变革策略提供依据。方法:基于整合式健康服务领域研究成果应用的行动促进框架的促进指引清单,通过焦点小组访谈,对某三级甲等专科医院10个病区的37名专业人员开展5次访谈,采用内容分析法进行资料分析。结果:共分析出儿童静脉输液装置选择证据转化的障碍因素9条,其中变革层面2条,分别是缺乏基于指南选择输液装置的相关制度或常规、证据挑战固有的思维方式;接受者层面4条,分别是护士对选择输液装置的变革动机不足、护士缺乏选择输液装置的知识和技能、护士缺乏主导输液装置选择的权限、缺乏人力资源和设备资源;组织环境层面3条,分别是组织机构内无明确的激励措施、变革对组织机构的优先战略提出挑战、缺乏有效的多学科合作机制。分析出促进因素3条,分别为证据质量高,护患均可从中受益;变革型领导力推动变革;变革与卫生系统的优先战略一致。结论:本研究从变革、接受者、组织环境3个层面明确了儿童静脉输液装置选择的相关证据在临床转化的障碍和促进因素,为拟定变革策略,构建循证实践方案提供了依据。