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j.urnal of Earth Science and Engineering 2013年第8期3卷 515-526页

作者： Pedro j. Llanos gerald R. Hintz Martin W. Lo j.mes K. Miller Flight Mechanics Section GMV Space and Defence S. A. Tres Cantos Madrid 28760 Spain Astronautical Engineering Department University of Southern California Los Angeles 90089 USA j.t Propulsion Laboratory California Institute of Technology Pasadena 91109 USA Retired Chief Scientist Space Navigation and Flight Dynamics Section KinetX Inc. Simi Valley California 93065 USA

Investigation of new orbit geometries exhibits a very attractive behavior for a spacecraft to monitor space weather coming from the Sun. Several orbit transfer mechanisms are analyzed as potential alternatives to monitor solar activity such as a sub-solar orbit or quasi-satellite orbit and short and long heteroclinic and homoclinic connections between the triangular points L4 and L5 and the collinear point L3 of the CRTBP （circular restricted three-body problem） in the Sun-Earth system. These traj.ctories could serve as channels through where material can be transported from L5 to L3 by performing small maneuvers at the departure of the Troj.n orbit. The size of these maneuvers at L5 is between 299 m/s and 730 m/s depending on the transfer time of the traj.ctory and does not need any deterministic maneuvers at L3. Our results suggest that material may also be transported from the Troj.n orbits to quasi-satellite orbits or even displaced quasi-satellite orbits.

关键词： Quasi-satellite orbits heteroclinic homoclinic Sun-Earth triangular points invariant manifolds solar observations.

Fluoride Adsorption onto Acid-Treated Diatomaceous Mineral from Kenya

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Materials Sciences and Applications 2011年第11期2卷 1654-1660页

作者： Enos W. Wambu Charles O. Onindo Willis j. Ambusso gerald K. Muthakia 不详

Acid treated diatomaceous earth (ATDE) from a mining site in Kenya was evaluated for its removal of F from aqueous solutions using adsorption batch experiments. The effect of initial F concentration, adsorbent dosage, contact time, temperature, pH and competing anions was studied. The adsorption process was very fast reaching an initial equilib- rium in j.st 10 min. Fluoride adsorption onto ATDE increased strongly from j.st about 40% to over 92% when the solution temperature was raised from 293 to 303 K. The process was however, almost unresponsive to pH changes drop- ping by a margin of - ions does not affect F adsorption onto ATDE. More so apart from the Cl- ions which marginally reduced F adsorption onto ATDE, there was no obvious effect of the SO42- , NO3- and PO43- ions on F uptake by ATDE. Complete F removal (100% adsorption) could be achieved at 400 mg/L initial F concentra- tions using 0.5 g/mL ATDE batch loading ratio at 303 - 313 K and pH = 3.4 ± 0.2. The F adsorption iso- therm was well correlated to the Freundlich and Langmuir models and could be classified as H-Type according to Giles classification of isotherms. The maximum Langmuir F adsorption capacity of ATDE was 51.1 mg/g. It has been demonstrated that a diatomaceous mineral from Kenya could be use as an inexpensive adsorbent for the removal of F ions from aqueous streams.

关键词： Acid Activated Diatomaceous Earth Competing Anions Fluoride Adsorption Isotherms

Control of Rhyzopertha dominica in stored rough rice through a combination of diatomaceous earth and varietal resistance

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Insect Science 2008年第5期15卷 455-460页

作者： Yaowaluk Chanbang Frank H. Arthur gerald E. Wilde j.mes E. Throne Chiang Mai University Chiang Mai Thailand USDA-ARS Grain Marketing and Production Research Center Manhattan KS USA Department of Entomology Kansas State University Manhattan KS USA

Adults ofRhyzopertha dominica （F.）, the lesser grain borer, were exposed on four varieties of rough rice with Dobie indices of susceptibility of 1.1 to 1.1 （low）, and four varieties with Dobie indices of susceptibility of 3.4 to 3.8 （high）. The varieties with low and high Dobie indices were classified as resistant and susceptible, respectively, to R. dominica. The purpose of the study was to evaluate control of R. dominica through the use of diatomaceous earth （DE） in combination with rice varieties that were either susceptible or resistant to R. dominica. The rice was treated with varying rates of the commercial DE Insecto, up to a maximum of 1 000 mg DE/kg of rice. Adult mortality at each application rate of DE was generally greater on three of four resistant varieties compared to three of four susceptible varieties. Progeny production from the parental generation exposed on the rice was also greater in 3 of the 4 resistant varieties compared to 3 of the 4 susceptible varieties at DE rates of 500 mg/kg or more. Progeny production in rice treated with a maximum rate of 1 000 mg/kg DE ranged from 7-44 adults on the resistant varieties compared to 75-155 adults on the susceptible varieties. At DE rates of 500, 750, and 1 000 mg/kg, the percentage of insect-damaged kernels （IDK） was also greater in 3/4 resistant varieties than in the susceptible varieties. Results show combining the use of DE with varietal resistance of rough rice to R. dominica could be used to limit populations of this insect in stored rice and help prevent economic damage.

关键词： diatomaceous earth DE host plant resistance integrated control rice

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石墨烯在防腐防污涂料中的应用进展

表面技术 2019年第6期48卷 89-97页

作者：陈建华李文戈赵远涛钱素萍 Odhiambo j. gerald 威海海洋职业学院船舶工程系山东威海264300 上海海事大学商船学院上海201306 上海奇想青晨涂料技术有限公司上海201505 School of Mechanical Manufacturing & Materials Engineering Jomo Kenyatta University of Agriculture and Technology P.O Box 62000-00200 Nairobi Kenya

石墨烯具有极好的阻隔性能、屏蔽性能及化学稳定性,其在防腐防污涂料中的应用已经被深入研究。介绍了石墨烯对防腐防污涂层性能的影响:降低水、氧气等腐蚀介质的渗透率,加强抗生物附着性,抑制微生物腐蚀。分析了石墨烯在涂料中的应用缺... 详细信息

石墨烯具有极好的阻隔性能、屏蔽性能及化学稳定性,其在防腐防污涂料中的应用已经被深入研究。介绍了石墨烯对防腐防污涂层性能的影响:降低水、氧气等腐蚀介质的渗透率,加强抗生物附着性,抑制微生物腐蚀。分析了石墨烯在涂料中的应用缺陷及产生原因:极强的范德华力导致石墨烯在涂料中分散性差、易团聚,高化学稳定性及疏水性导致石墨烯与成膜物质结合性差,超高的导电性导致石墨烯膜在失效时加速金属腐蚀。综述了为应对石墨烯在防腐防污涂料中的应用缺陷,国内外学者采用的主要方法:采用改性处理方法制备改性石墨烯(GO、RGO、FG)以及合成石墨烯复合颗粒(石墨烯修饰纳米粒子,即GO-Al2O3颗粒、GO-TiO2颗粒、GO-SiO2颗粒等;树脂负载石墨烯复合填料,即石墨烯/聚苯胺复合填料等)。最后展望了石墨烯及其衍生物在防腐防污涂料中的发展。

关键词：石墨烯防蚀性能防腐涂料表面改性防污涂料复合颗粒

CONTACT RESISTANCE FAILURE IN RELAY ASSEMBLY PROCESS

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CONTACT RESISTANCE FAILURE IN RELAY ASSEMBLY PROCESS

细胞外信号调节激酶磷酸化对十字孢碱诱导肝星形细胞凋亡的调控(英文)

第一届电工产品可靠性与电接触国际会议

作者： gerald j.Witter Chugai USA Inc. 3780 Hawthorn Court IL 37008 USA

＜正＞ Contact resistance deterioration is one of the most common failure modes in early testing during relay assembly process and it can lead to many rej.ctions and cause a tremendous economic consequence. To define the correct root cause of this problem is the key to improve the relay production yield and has great economic potential. Two typical contamination sources, plastic particles and insulating films have been described as the common causes for high contact resistance and how they affect the contact resistance has been discussed. The main factors which determine the influences of these contaminations have also been given.

关键词： Index Terms—Contact resistance contamination and relay.

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中南大学学报（医学版） 2012年第1期37卷 11-16页

作者：范江虹申竑 Frank j.Burzynski gerald Y.Minuk 巩跃文马尼托巴大学药学院加拿大马尼托巴温尼伯R3E OT5 中南大学湘雅医院医学科学研究中心长沙410008 哈尔滨医科大学第二附属医院哈尔滨150081 马尼托巴大学医学院内科肝病研究室加拿大马尼托巴温尼伯R3E 3P4

目的:肝星形细胞(hepatic stellate cells,HSCs)是参与肝纤维化和肝硬化发展过程的主要细胞。在肝纤维化过程中,肝星形细胞增殖并发生表型转化,从静止状态向肌纤维母细胞样转化。后者的归宿可为凋亡,也可重归静止状态。目前转化肌纤维... 详细信息

目的:肝星形细胞(hepatic stellate cells,HSCs)是参与肝纤维化和肝硬化发展过程的主要细胞。在肝纤维化过程中,肝星形细胞增殖并发生表型转化,从静止状态向肌纤维母细胞样转化。后者的归宿可为凋亡,也可重归静止状态。目前转化肌纤维母细胞样细胞的凋亡机制尚未明确。本文研究细胞外信号调节激酶(extracellular signal-regulated kinases,ERKs)磷酸化状态对十字孢碱诱导HSCs凋亡的影响。方法:采用Western印迹和流式细胞术检测4种肝星形细胞株(CFSC-8B,-2G,-3H和-5H)的ERKs表达水平和细胞凋亡状态。结果:4种肝星形细胞株各具有形态特异性,并与其内α-SMA表达水平相符,其中CFSC-8B细胞株α-SMA表达水平为最高。虽然ERK1/2总蛋白表达水平在4种细胞株相似,但磷酸化ERK1/2在CFSC-8B和CFSC-2G两个细胞株中表达明显高于CFSC-3H和CFSC-5H细胞株。进一步采用CFSC-8B细胞(ERK1/2高磷酸化水平)和CFSC-5H细胞(ERK1/2低磷酸化水平),通过十字孢碱诱导细胞凋亡。结果显示CFSC-8B细胞对十字孢碱诱导的细胞凋亡敏感性明显增加。同时,十字孢碱还可进一步增加这2株细胞内ERK1/2的磷酸化程度。结论:HSCs中ERK1/2的磷酸化程度决定细胞对十字孢碱所致细胞凋亡的敏感性。

关键词：细胞外信号调节激酶肝星形细胞十字孢碱凋亡流式细胞术

Diffusion Limitation for Atrazine Biodegradation in Soil

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Advances in Microbiology 2013年第5期3卷 412-420页

作者： Teresa A. j.hnson Timothy R. Ellsworth Robert j. M. Hudson gerald K. Sims Department of Entomology Plant Pathology and Weed Science New Mexico State University Las Cruces USA

Effects of sub-millimeter scale heterogeneity in chemical and microbial distributions on atrazine degradation were examined using Pseudomonas sp. strain ADP introduced into soil at a population mimicking atrazine-adapted soils (~2000 cells/g), and employing a range of soil water pressures (?100, ?300, ?500 kPa). Heterogeneous cell distribution was employed in all treatments whereas uniformity of distribution was a variable for atrazine introduction. Two methods of initially distributing atrazine in soil were examined. Proximally-applied atrazine (PAA) was intended to yield elevated atrazine concentrations in the vicinity of the degraders. Dispersed atrazine (DA) was introduced to distribute the chemical uniformly as compared to the distribution of degraders. Both rate and extent of degradation were greater than PAA, regardless of water content, presumably due to proximity of atrazine to degraders. Biodegradation decreased with decreasing water content for both application methods, attributed to decreases in atrazine’s effective diffusion. Mineralization of nearly 100% of DA in soils receiving a heterogeneous inoculum with a greater cell density (~107 cells/g) indicates that biodegradation was limited by the distance atrazine had to diffuse. Results support the hypothesis that enhanced populations of atrazine degraders, as reported elsewhere for atrazine-adapted soils, though heterogeneously distributed, may overcome bioavailability limitations.

关键词： Biodegradation Environmental Agriculture Degradation Soil Atrazine Pseudomonas sp.

铝合金表面等离子喷涂Al2O3-3%TiO2复合涂层工艺参数优化的研究

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表面技术 2019年第6期48卷 322-331页

作者：吴艳鹏魏剑辉李文戈赵远涛顾彩香尹莉 Odhiambo j. gerald 上海海事大学商船学院上海201306 上海海事大学物流工程学院上海201306 中国船级社上海规范研究所上海200135 上海万泽精密铸造有限公司上海201400 School of Mechanical Manufacturing & Materials Engineering Jomo Kenyatta University of Agriculture and Technology P.O Box 62000-00200 Nairobi Kenya

目的通过优化等离子喷涂工艺参数,提高铝合金表面等离子喷涂Al2O3-3%TiO2复合陶瓷涂层的结合强度和涂层表截面硬度。方法用正交试验法,对影响喷涂涂层结合强度和硬度的4个关键喷涂参数进行优化,分别得到喷涂粘结底层Ni-5Al和工作表层Al2... 详细信息

目的通过优化等离子喷涂工艺参数,提高铝合金表面等离子喷涂Al2O3-3%TiO2复合陶瓷涂层的结合强度和涂层表截面硬度。方法用正交试验法,对影响喷涂涂层结合强度和硬度的4个关键喷涂参数进行优化,分别得到喷涂粘结底层Ni-5Al和工作表层Al2O3-3%TiO2的最佳优化参数。结果通过正交试验确定影响Ni-5Al涂层综合指标的因素由主到次是喷涂电流、喷涂距离、辅气流量、主气流量,最优水平数为2、3、2、1;影响Al2O3-3%Ti O2涂层综合指标的因素由主到次是喷距、辅气流量、电流、主气流量,最优水平数为2、3、2、1。Ni-5Al涂层的最佳喷涂工艺参数为:喷涂距离120 mm,喷涂电流520 A,主气流量42 L/min,辅气流量7.5 L/min。Al2O3-3%TiO2复合涂层最佳喷涂工艺参数为:喷涂距离90 mm,喷涂电流530 A,主气流量46 L/min,辅气流量7.8 L/min。最佳工艺下制备的Ni-5Al底层与基体的结合强度为25.2 MPa,Al2O3-3%TiO2复合涂层与Ni-5Al底层的结合强度为17.8 MPa,且其截面硬度在1000HV0.5以上。结论对喷涂工艺参数进行优化可以得到质量高且稳定的Al2O3-3%Ti O2复合喷涂涂层,与非最佳工艺参数喷涂涂层相比,各指标均有较大提高。

关键词：等离子喷涂 Al2O3-3%TiO2 工艺参数正交试验表面硬度结合强度

Bovine immunoglobulin protein isolates for the nutritional management of enteropathy

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World j.urnal of Gastroenterology 2014年第33期20卷 11713-11726页

作者： Bryon W Petschow Anthony T Blikslager Eric M Weaver j.y M Campbell j.vier Polo Audrey L Shaw Bruce P Burnett gerald L Klein j.Marc Rhoads Entera Health Inc. NC 27518 United States College of Veterinary Medicine North Carolina State University Raleigh NC 27607 United States APC Inc. Ankeny IA 50021 United States APC Europe S.A. Barcelona E-08403 Spain University of Texas Health Sciences Center Houston TX 77030 United States

The gastrointestinal tract is responsible for a multitude of digestive and immune functions which depend upon the balanced interaction of the intestinal microbiota, diet, gut barrier function, and mucosal immune response. Disruptions in one or more of these factors can lead to intestinal disorders or enteropathies which are characterized by intestinal inflammation, increased gut permeability, and reduced capacity to absorb nutrients. Enteropathy is frequently associated with human immunodeficiency virus(HIV) infection, inflammatory bowel disease, autoimmune enteropathy, radiation enteritis, and irritable bowel syndrome(IBS), where pathologic changes in the intestinal tract lead to abdominal discomfort, bloating, abnormal bowel function(e.g., diarrhea, urgency, constipation and malabsorption). Unfortunately, effective therapies for the management ofenteropathy and restoring intestinal health are still not available. An accumulating body of preclinical studies has demonstrated that oral administration of plasmaor serum-derived protein concentrates containing high levels of immunoglobulins can improve weight, normalize gut barrier function, and reduce the severity of enteropathy in animal models. Recent studies in humans, using serum-derived bovine immunoglobulin/protein isolate, demonstrate that such protein preparations are safe and improve symptoms, nutritional status, and various biomarkers associated with enteropathy. Benefits have been shown in patients with HIV infection or diarrhea-predominant IBS. This review summarizes preclinical and clinical studies with plasma/serum protein concentrates and describes the effects on host nutrition, intestinal function, and markers of intestinal inflammation. It supports the concept that immunoglobulin-containing protein preparations may offer a new strategy for restoring functional homeostasis in the intestinal tract of patients with enteropathy.

关键词： Immunoglobulins Plasma proteins Inflammation Gut barrier Diarrhea Malabsorption Treatment Nutrition

Artificial intelligence as a means to improve recognition of gastrointestinal angiodysplasia in video capsule endoscopy

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Artificial Intelligence in Gastrointestinal Endoscopy 2021年第4期2卷 179-184页

作者： gerald A Cox II Christian S j.ckson Kenneth j.Vega Department of Medicine Loma Linda University Medical CenterLoma LindaCA 92354United States Gastroenterology Section VA Loma Linda Healthcare SystemLoma LindaCA 92357United States Division of Gastroenterology and Hepatology Augusta University-Medical College of GeorgiaAugustaGA 30912United States

Gastrointestinal angiodysplasia(GIAD)is defined as the pathological process where blood vessels,typically venules and capillaries,become engorged,tortuous and thin walled–which then form arteriovenous connections within the mucosal and submucosal layers of the gastrointestinal *** are a significant cause of gastrointestinal bleeding and are the main cause for suspected small bowel *** make the diagnosis,gastroenterologists rely on the use of video capsule endoscopy(VCE)to“target”***,the use of VCE can be cumbersome secondary to reader fatigue,suboptimal preparation,and difficulty in distinguishing *** human eye is *** same capsule study read by two different readers are noted to have miss rates like other forms of *** intelligence(AI)has been a means to bridge the gap between human imperfection and recognition of *** use of AI in VCE have shown that detection has improved,however the other burdens and limitations still need to be *** use of AI for the diagnosis of GIAD shows promise and the changes needed to enhance the current practice of VCE are near.

关键词： Artificial intelligence Video capsule endoscopy Gastrointestinal angiodysplasia Detection Bleeding Small bowel