检索结果-南通市图书馆

球型颗粒填充聚合物基复合材料有效导热系数的研究

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

球型颗粒填充聚合物基复合材料有效导热系数的研究

第八届全国摩擦学大会

作者：刘祥宽 MEHARI salomon 胡献国合肥工业大学摩擦学研究所合肥工业大学摩擦学研究所合肥工业大学摩擦学研究所

本文运用数值单元体法建立了计算填充二硫化钼聚甲醛基复合材料有效导热系数的模型,提出了用有限元法和用求单元体模型的等效热阻来确定该复合材料的等效导热系数两种计算方法,通过计算表明两种方法的计算结果比较接近,并运用上述方法... 详细信息

本文运用数值单元体法建立了计算填充二硫化钼聚甲醛基复合材料有效导热系数的模型,提出了用有限元法和用求单元体模型的等效热阻来确定该复合材料的等效导热系数两种计算方法,通过计算表明两种方法的计算结果比较接近,并运用上述方法研究了二硫化钼含量对聚甲醛基复合材料导热系数影响规律。应用 ANSYS 软件模拟了该自润滑复合材料在端面摩擦磨损试验条件下的温度场,结果表明：有限元计算结果与实验测量结果接近。

关键词：复合材料等效导热系数有限元温度场

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

未知的土地

陶瓷学报 2017年第3期 451-451页

作者： Celine salomon 景德镇陶瓷大学国际学院

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

数学在科学起源中的作用

Quality Control of Tramadol in Kisangani: Development, Validation, and Application of a UV-Vis Spectroscopic Method

1992年

作者：萨洛蒙·博克纳(salomon Bochner)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

American Journal of Analytical Chemistry 2021年第8期12卷 295-309页

作者： Marguerite Borive Amani Jérémie Mbinze Kindenge Emile Tweni Baruti Elodie Nsasi Bakiantima salomon Batina Agasa Philippe Hubert Roland Marini Djang’eing’a Department of Pharmacy Faculty of Medicine and Pharmacy University of Kisangani Kisangani Democratic Republic of the Congo Laboratory of Drugs Analysis Department of Galenic and Drug Analysis Faculty of Pharmaceutical Sciences University of Kinshasa Kinshasa Democratic Republic of the Congo Department of Internal Medicine Faculty of Medicine and Pharmacy University of Kisangani Kinshasa Democratic Republic of the Congo Laboratory of Analytical Pharmaceutical Chemistry Faculty of Medicine University of Liège Liège Belgium

Context: Substandard and falsified medicines are circulating in low-income countries mostly without any control. We availed a simple and not expensive UV-Vis spectroscopic method to evaluate the quality of tramadol in Kisangani before and during the Covid-19 period. Methods: For the analytical quantitative method, an experimental design was applied to set up the optimal levels of the selected factors, namely, pH of dissolution medium, type of cuvette, and wavelength. Taking into account the capsule pharmaceutical formulation within 80 - 120 μg·mL-1 concentration range, we analyzed 89 tramadol samples from pharmacies and hospitals of the six Kisangani municipalities. Results: pH showed a significant effect on absorbance, whereas quartz cuvette and wavelength did not. A typical 100 μg·mL-1 tramadol solution gave an absorbance of 0.64 at 272 nm. Validation highlighted a matrix effect observed with a 6% bias. A correction factor of 0.9372 allowed to improve the accuracy profile, which were then totally included within the 10% acceptance limits. Quality control revealed that 25 samples out of 89 were not compliant in terms of manufacturing license, registration status in DRC and content as well. Conclusion: This study showed that the strengthening of analytical strategy in Kisangani is a need.

关键词： Tramadol UV-Vis Spectroscopy Method Development Validation Quality Control

Anti-Sperm Antibodies: Prevalence of Ig A and Ig G Positive Serology among Infertile Patients in Kisangani, Democratic Republic of Congo

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2019年第5期9卷 707-714页

作者： Mike-Antoine Maindo Alongo Juakali Sihalikyolo salomon Batina Agasa Antoine Modia O’yandjo Bernard Mbutu Gédéon Katenga Bosunga Jean-Pascal Manga Okenge Department of Obstetrics and Gynecology Faculty of Medicine University of Kisangani Kisangani Democratic Republic of Congo Department of Internal Medicine Faculty of Medicine University of Kisangani Kisangani Democratic Republic of Congo Intitut Superieur des Techniques Médicales de Kisangani Ema Esu Laboratory Kisangani Democratic Republic of Congo

Introduction: Infertility in a couple is a stressful situation. Among the causes is the presence of antisperm antibodies that play a harmful role in reducing fertility and negatively influencing in vitro fertilization. The aim of this study is to determine their prevalence among infertile patients in Kisangani. Patients and methods: We conducted an analytical cross-sectional study in health facilities in the city of Kisangani. Of the 1379 patients who consulted for conception, 311 were tested for antisperm antibodies by ELISA. Results: Of the 311 patients, 121 tested positive (38.91%). Women were significantly more likely to be positive (p-value = 0.013). Ig G was positive in 32.48% of patients and Ig A in 10.93%. Age was a significant predictor of the number of positive patients (p-value < 0.001). Compared to patients of ≤30 years of age, having 31 to 40 years of age or 41 years of age and older increased respectively 2 and 3 times the risk of being positive. In secondary infertility, women are twice as likely to be positive. Conclusion: The prevalence of antisperm antibodies is very high among infertile patients in Kisangani with predominance among women. Older age increases the risk of positivity. This test should therefore be integrated into infertility investigations as often as possible.

关键词： Antisperm Antibody Immune Infertility Unexplained Infertility Democratic Republic of Congo

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

创造以色列历史的70天

Anti-Sperm Antibodies: Risk Factors of Positive Serology among Infertile Men Patients in Kisangani-Democratic Republic of Congo

作者： (法)萨洛蒙·马尔卡(salomon Malka)

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Open Journal of Obstetrics and Gynecology 2019年第8期9卷 1130-1141页

作者： Maindo Alongo Mike-Antoine Juakali Sihalikyolo salomon Batina Agasa Antoine Modia O’yandjo Bernard Mbutu Gédéon Katenga Bosunga Jean-Pascal Manga Okenge Department of Obstetrics and Gynecology Faculty of Medicine University of Kisangani Kisangani Democratic Republic of Congo Department of Internal Medicine Faculty of Medicine University of Kisangani Kisangani Democratic Republic of Congo Intitut Superieur des Techniques Médicales de Kisangani Ema Esu Laboratory Kisangani Democratic Republic of Congo

Introduction: Antisperm antibodies (ASA) prevalence is high in Kisangani. ASA are one of the male factors of infertility that can reduce spermatozoa motility and cervical penetration or prevent acrosomal reaction and even alter embryo development. This study aims to determine the risk factors of ASA positivity among infertile men in Kisangani. Patient and Method: We conducted a case-control study during a period of 2 years in Kisangani on 111 men who consulted for conception and tested for ASA by ELISA. We did a simple pairing that concerned only the type of infertility. For a better balance between the number of cases and controls per stratum to provide better accuracy in the adjusted OR estimate, we performed a 1:1 match. Results: This study showed that businessmen [ORa = 5.0000(1.2452 - 20.0767)] and jobless [ORa = 5.8125(1.1477 - 29.4367)] were at risk of being positive for ASA. Violent blow to testicles [ORa = 6.7391(1.3455 - 33.7545)], cure of hernia [ORa = 4.3478(1.0722 - 17.6299)], Chlamydia infection [ORa = 4.7125(1.3405 - 16.5665)], leucospermia [ORa = 4.1429(1.0406 - 19.7155)] and presence of Staphylococcus aureus [ORa = 3.4444(0.6410 - 18.5082)] were associated to positive ASA. Conclusion: This study shows that factors that may lead to risky sexual behavior and physical or infectious trauma are important risk factors for ASA positivity. It is therefore necessary to search for them systematically during male infertility in order to guide the search for ASA.

关键词： Antisperm Antibody Chlamydia Trachomatis Men Infertility Immune Infertility Infertility Democratic Republic of Congo

Inverted Apical CD24 and Weak EZH2 Expressions Are Phenotypic Characteristics of Pure Invasive Micropapillary Carcinoma of the Breast

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Pathology 2013年第2期3卷 85-95页

作者： Nadège Gruel Aurélie Cédenot Marion Richardson Paul Fréneaux Jaydutt Bhalshankar Thierry Dubois Xavier Sastre-Garau Olivier Delattre Anne Vincent-salomon INSERM Unit 830 Institut Curie Paris France

Invasive micropapillary carcinomas (IMPC) of the breast account for less than 2% of all breast cancers and have been recently described as luminal B carcinomas. CD24, CD44, ALDH1 and EZH2 are commonly used as stem-cell markers that display differential expression as a function of stage and molecular type, but their pattern of expression according to this rare histological type remains poorly defined and unknown for EZH2. We assessed expression of these markers in a series of 28 micropapillary breast carcinomas and compared the results with those obtained in a series of luminal A (27 cases) and B (34 cases) invasive carcinomas not otherwise specified (IC-NST). CD24 and CD44 were expressed in most cases. However, CD24 was expressed at the inverted apical membrane in 85% of invasive micropapillary carcinoma and at the apical pole of gland-forming cells in 45% of luminal A (p-val = 6.8 × 10-4) and 13% of luminal B cases (p-val = 1.1 × 10-7). ALDH1 was expressed in the stroma in most tumors, but in only 25%, 11% and 15% in epithelial cells of IMPC, luminal A and B IC-NST, respectively. Nuclear expression of EZH2 was not observed in luminal A tumors, and was detected in 35% (12/34) of luminal B carcinomas (p-val = 6.1 × 10-3) and only 4% (1/28) of invasive micropapillary carcinomas. This series shows that invasive micropapillary carcinomas harbor a CD24-positive inverted apical pole associated with weak EZH2 expression, phenotypical characteristics that distinguish this entity from other luminal carcinomas.

关键词： CD44 CD24 ALDH1 EZH2 Invasive Micropapillary Breast Carcinoma

菜籽油存储过程中添加不同香料对油品质的影响(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

菜籽油存储过程中添加不同香料对油品质的影响(英文)