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数学的实践与认识 2017年第15期47卷 258-265页

作者：包永梅高娃内蒙古财经大学统计与数学学院内蒙古呼和浩特010051

通过一个辅助性方程和埃米尔特变换研究广义随机KdV方程的随机雅克比椭圆函数类波解.此外,还通过椭圆函数在模数取极限m→0和m→1的情况,给出方程的随机类孤子解和随机三角函数波解,所得结果丰富了广义随机KdV方程的精确解.

关键词：随机广义KdV方程随机精确解白色噪音埃米尔特变换

Study of machining induced surface defects and its effect on fatigue performance of AZ91/15%SiCp metal matrix composite

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Journal of magnesium and Alloys 2020年第2期8卷 387-395页

作者： Nishita Anandan m.Ramulu Department of mechanical Engineering University of WashingtonSeattleWA 98195USA

The quality of surface generated in a peripheral milling of AZ91/SiCp/15%for varying machining conditions and its effect on the fatigue performance are investigated in this *** machined surface quality was evaluated through roughness measurements and SEm micrographs of ine machined *** iesis were pcifumicu io iiieasure the mechanical properties of the ***,fatigue life of milled specimens was measured through axial fatigue tests at four loading *** and SEm/EDS micrographs of the fractured surface were studied to identify the crack initiation site and propagation *** machined at a lower feed rate of 0.1 mm/rev was found to have excellent surface finish and consequently higher fatigue *** 0.3 mm/rev,the presence of feed marks and other surface defects resulted in a drastic decrease in fatigue *** distinct regions were identified on the fractured surface,particle fracture along and perpendicular to the surface,voids in the matrix due to particle debonding and pull out and typical ductile failure of matrix with embedded SiC particles.

关键词： magnesium composite machined surface Surface integrity Fatigue

Cl- is required for HCO3-entry,necessary for sperm capacitation:involvement of a Cl-/HCO3-exchanger(SLC26A3) and CFTR

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Cl- is required for HCO3-entry,necessary for sperm capacitat...

批量到达带启动时间的单重休假m/G/1排队系统

浙江省生理科学会2008年学术年会

作者： Lai Ling Tsang Yiu wa Chung P.Hglund Hsiao Chang Chan 石其贤 Epithelial Cell Biology Research Center Li Ka Shing Institute of Health SciencesDepartment of PhysiologyFaculty of MedicineThe Chinese University of Hong KongHK Hospital for Children and Adolescents Department of Medical GeneticsUniversity of HelsinkiFinland

Our previous study has demonstrated the involvement of Cystic fibrosis transmembrane conductance regulator(CFTR) in transporting bicarbonate necessary for sperm capacitation,however,whether its involvement is direct or

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运筹与管理 2005年第4期14卷 60-63页

作者：高娃内蒙古财经学院基础部内蒙古呼和浩特010051

本文研究批量到达带启动时间的单重休假的m/G/1排队系统,给出稳态队长的母函数和等待时间分布的LST及其它们的随机分解结果,推导出忙期、闲期和线期母函数和均值。

关键词：运筹学 m/G/1 连续时间排队随机分解单重休假

新建双线铁路有砟轨道无缝线路换铺法施工技术改进

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价值工程 2016年第9期35卷 99-101页

作者：高娃中铁十七局集团有限公司太原030000

本文在对换铺法深入了解的基础上,结合目前新建双线有砟无缝线路的施工特点和工程实例,介绍了对现有换铺技术提出的改进思路,和自主开发的实用性装置,在提高工效、降低安全风险、降低劳动强度、节省成本等方面取得了显著的综合效益,谨... 详细信息

本文在对换铺法深入了解的基础上,结合目前新建双线有砟无缝线路的施工特点和工程实例,介绍了对现有换铺技术提出的改进思路,和自主开发的实用性装置,在提高工效、降低安全风险、降低劳动强度、节省成本等方面取得了显著的综合效益,谨供同类工程参考。

关键词：有砟轨道无缝线路 500m长钢轨换铺法

Salt Dynamics in Rhizosphere of Puccinellia ciliata Bor. in a Loamy Soil

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Pedosphere 2005年第6期15卷 784-791页

作者： ZHANG Zhen-Hua C. TANG Z. RENGEL Agricultural Resource and Environmental Research Center Jiangsu Academy of Agricultural Sciences Nanjing 210014 （China）. Soil Science and Plant Nutrition School of Earth and Geographical Sciences The University of Western Australia 35 Stirling Highway Crawley WA 6009 （Australia） CRC Plant-Based management of Dryland Salinity The University of Western Australia 35 Stirling Highway Crawley WA 6009 （Australia） Department of Agricultural Sciences La Trobe University Bundoora Vic 3086 （Australia）

A glasshouse experiment using a rhizobox technique was conducted to examine salt dynamics in the rhizosphere of a salt-tolerant grass, Puccinellia ciliata Bor. ’Irwin Hunter’, grown in a loamy soil, and to study the effect of rainfall flush on salt accumulation in the rhizosphere. The rhizobox (10 × 5.5 × 50 cm) had a nylon mesh (1 μm) positioned vertically in the middle to create two compartments filled with soil amended with 1 g NaCl kg-1. The plants were grown in one compartment only. Flushed treatments received 275 mL of deionized water two days before harvest. In the plant-growing compartment, soils were sectioned vertically at 5 cm intervals. Significant differences in soil electrical conductivity (EC) (P ments. In the no-plant compartment (rhizosphere), soil cores were taken horizontally at depths of 5, 20 and 40 cm and sliced at 1, 2, 3, 4, 5, 7, 10, 15 and 20 mm away from the roots. Soil EC and Cl- concentration at the 5 and 20 cm depths, and Na+ concentration at the 5 cm depth significantly decreased (P way from the root, but no significant differences were observed in soil pH and concentrations of the K+ and Ca2+. The flush treatment only had significant influence on soil EC, pH, and Cl- concentration at the 20 cm depth. Thus, salt accumulation could occur in the rhizosphere of salt-tolerant species on saline soils, and the periodic low rainfall might not have a strong influence on salt distribution in the rhizosphere and/or root zone.

关键词： leaching Puccinellia ciliata Bor. rhizosphere salt dynamics

Venous thromboembolism prophylaxis in hospitalized elderly patients： Time to consider a ＇mUST＇ strategy

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Journal of Geriatric Cardiology 2011年第2期8卷 114-120页

作者： Kwok m Ho Edward Litton Department of Intensive Care medicine Royal Perth Hospital and School of Population Health University of Western Australia Perth WA 6000 Australia

Venous thromboembolism （VTE） is the commonest cause of preventable death in hospitalized patients. Elderly patients have higher risk of VTE because of the high prevalence of predisposing co-morbidities and acute illnesses. Clinical diagnosis of VTE in the elderly patient is particularly difficult and, as such, adequate VTE prophylaxis is of pivotal importance in reducing the mortality and morbidities of VTE. Omission of VTE prophylaxis is, however, very common despite continuous education. A simple way to overcome this problem is to implement universal VTE prophylaxis for all hospitalized elderly patients instead of selective prophylaxis for some patients only according to individual＇ s risk of VTE. Although pharmacological VTE prophylaxis is effective for most patients, a high prevalence of renal impairment and drug interactions in the hospitalized elderly patients suggests that a multimodality approach may be more appropriate. mechanical VTE prophylaxis, including calf and thigh compression devices and/or an inferior vena cava filter, are often underutilized in hospitalized elderly patients who are at high-risk of bleeding and VTE. Because pneumatic compression devices and thigh length stockings are virtually risk free, mechanical VTE prophylaxis may allow early or immediate implementation of VTE prophylaxis for all hospitalized elderly patients, regardless of their bleeding and VTE risk. Although the cost-effectiveness of this multimodality Universal STat （＇mUST＇） VTE prophylaxis approach for hospitalized elderly patients remains uncertain, this strategy appears to offer some advantages over the traditional ＇selective and single-modal＇ VTE prophylaxis approach, which often becomes ＇hit or miss＇ or not implemented promptly in many hospitalized elderly patients. A large clustered randomized controlled trial is, however, needed to assess whether early, multimodality, universal VTE prophylaxis can improve important clinical outcomes of hospitalized elderly patients.

关键词： age bundle of care deep vein thrombosis prevention pulmonary embolism

Chemoprevention of esophageal adenocarcinoma

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Gastroenterology Report 2020年第4期8卷 253-260,I0001页

作者： Erik J.Snider Andrew m.Kaz John m.Inadomi William m.Grady Division of Gastroenterology Department of Internal MedicineUniversity of Washington School of MedicineSeattleWAUSA Gastroenterology Section VA Puget Sound Health Care SystemSeattleWAUSA Clinical Research Division Fred Hutchinson Cancer Research CenterSeattleWAUSA

Esophageal adenocarcinoma(EAC)is a major cause of cancer-related death,particularly in Western populations,and is rapidly rising in Asian populations at this *** all EACs develop from the precursor lesion Barrett’s esophagus(BE),which is the most significant risk factor for ***,the rates of progression from BE to EAC are low and patients with BE are ***,any strategy for EAC prevention must carry a low risk of harm in order to be clinically *** current EAC-screening and BE-surveillance methods carry some procedural risk and are burdensome,there is an opportunity for chemoprevention,*** or dietary factors that may prevent BE from progressing to EAC.A variety of candidate chemoprevention therapies have been assessed to ***-pump inhibitors(PPIs)are the best studied and have modest EAC-chemoprevention efficacy in BE patients,with a recent randomized trial showing that high-dose PPI may be more effective than low-dose *** and other non-steroidal anti-inflammatory drugs have moderate quality observational and randomized-trial evidence for preventing progression of BE to EAC,but their risks for harm have precluded their routine clinical *** therapies(statins,metformin,female sex hormones)generally do not have strong evidence to support their use in EAC *** progress has been made in this field,there is still a need for more effective and safe chemoprevention therapies for EAC.

关键词： Barrett’s esophagus esophageal adenocarcinoma chemoprevention

Determinants of maternal mortality at the Community University Hospital of Bangui: Central African Republic

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Open Journal of Obstetrics and Gynecology 2023年第9期13卷 1478-1486页

作者： Gertrude Rose De Lima Kogboma Wongo Thibaut Boris Clavaire Songo-Kette Gbekere Rodrigue Herman Doyama-Woza Siméon matoulou-m’bala wa-Ngogbe Alida Koirokpi Sabrina Ouapou Georges Trésor Gamache Norbert Richard Ngbale Abdoulaye Sepou Department of Gynaecology and Obstetrics Centre Hospitalier Universitaire Communautaire Bangui Central African Republic Department of Gynaecology and Obstetrics Centre Hospitalier Universitaire de l’Amitié Sino Centrafricaine Bangui Central African Republic Department of Public Health Faculty of Health Sciences University of Bangui Bangui Central African Republic

Introduction: Pregnancy is a physiological condition that can sometimes end in death. The death of a woman is a constant concern for the obstetrician and is considered a major public health problem in our developing countries. Objective: To identify the determinants that contribute to maternal morbidity and mortality in the Gynaecology and Obstetrics Department of the University Community Hospital. methodology: We conducted a retrospective study from 1 January 2015 to 31 December 2019 (5 years) in the obstetrics and gynaecology department of the Centre Hospitalier Universitaire Communautaire (CHUC). It focused on the determinants of maternal mortality. Our study population consisted of all women who died during the period and met the World Health Organization (WHO) definition of maternal mortality (mOmA). We used non-probability sampling with the exhaustive choice technique. Results: The study revealed that the number of deaths recorded was 98, while 17,172 live births were registered during the same period. The maternal mortality ratio was 570 per 100,000 live births. The most common age group was 20 to 24, with an average age of 26. The frequency of death among primiparous women was 37.74%, pauciparous women 28.30% and multiparous women 26.42%. Direct causes were dominated by abortion complications (22.41%), followed by infections (9.30%) and haemorrhage (8.19%). Indirect causes were dominated by anaemia with a proportion of 45.16%. The majority of maternal deaths occurred in the post-partum period (34.71%). most maternal deaths occurred after vaginal delivery, 19 cases (63.33%), while 11 deaths (36.66%) occurred after caesarean section. The occurrence of direct causes was associated with age less than or equal to 25 years, abortion complications and primiparity, with a statistically significant difference. Conclusion: At the end of this study, complications of unsafe abortion and poverty are all factors contributing to the rise in the maternal mortality rate. Emp

关键词： maternal mortality Determinants Community Hospital

Corticosurrenaloma: About a Pediatric Case

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Open Journal of Pediatrics 2022年第2期12卷 449-452页

作者： Thierry mukenge wa mukengeshay Fatoumata Binta Balde Zineb Benmassaoud Priscilla Kinsala Othmane Allaoui Abdelhalim mahmoudi Khalid Khattala Sara Benmilloud Youssef Bouabdallah Service de Chirurgie Pédiatrique Centre Hospitalier et Universitaire Hassan II de Fès Fès Morocco Service de Pédiatrie Unité d’Oncologie Centre Hospitalier et Universitaire Hassan II de Fès Fès Morocco Faculté de médecine et de Pharmacie Université Sidi Mohamed Ben Abdallah de Fès Fès Morocco

Introduction: This study aims to describe the outcome of adrenocortical cancer in children through observation. Observation: A 10-year-old girl with no previous pathological history. She presented headaches and severe hypertension with clinical and biological signs of hyperandrogenism for 6 months. An abdominal CT scan showed an encapsulated left adrenal mass without local or regional invasion or secondary location. A pheochromocytoma or adrenal neuroblastoma was first suspected. The blood pressure was stable at 130/65 mmHg under antihypertensive drugs. She underwent a complete tumor resection without any intraoperative incident. The pathologic study confirmed the adrenocortical carcinoma scored Weiss 7. The severe high blood pressure reappeared 2-year later despite antihypertensive drugs. The thoracic abdominal and pelvic CT scan showed a locally advanced tumor recurrence in the left adrenal gland with parenchymal nodes in the lungs and liver. The outcome was fatal despite medical and surgical management. Conclusion: Adrenocortical cancer is a rare tumor. It is important to hormonal testing in the presence of Cushing’s syndrome in children. It can give a strong indication of the diagnostic possibilities. Histology confirms the diagnosis. The evolution is covered by complications, in particular recurrence with life-threatening metastases.

关键词： Adrenal Tumor Adrenal Cortex Hyperandrogenism Child