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硒对培养晶体离子的内环境稳定及透明度的作用

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国外医学（医学地理分册） 1990年第1期11卷 13-15页

作者： High.,kr 齐社宁

AN ANALOGUE OF KüNNETH THEOREM INSTRONG HOMOLOGY

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Acta Mathematica Scientia 2002年第1期22卷 32-40页

作者： Dae- Woong Lee Department of Mathematics Myungshin University Sunchon Chonnam 540-871 South Korea

After defining the strong tensor product of strong (sub)chain complenes, it is shown that an analogue of the Kunneth theorem holds in strong homology by proving that the kernel (cokernel) of connecting homomorphisms is isomorphic to the direct sum of torsion (tensor) products of strong homology groups. An isomorphism between strong (r-stage) homology groups of inverse systems is also constructed.

关键词： Derived limit strong (r-stage) homology strong tensor product Mittag-Leffler property

Artificial intelligence in gastroenterology: A state-of-the-art review

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World Journal of Gastroenterology 2021年第40期27卷 6794-6824页

作者： Paul T kröner Megan ML Engels Benjamin S Glicksberg Kipp W Johnson Obaie Mzaik Jeanin E van Hooft Michael B Wallace Hashem B El-Serag Chayakrit krittanawong Division of Gastroenterology and Hepatology Mayo ClinicJacksonvilleFL 32224United States Cancer Center Amsterdam Department of Gastroenterology and HepatologyAmsterdam UMCLocation AMCAmsterdam 1105The Netherlands The Hasso Plattner Institute for Digital Health Icahn School of Medicine at Mount SinaiNew YorkNY 10029United States Department of Gastroenterology and Hepatology Leiden University Medical CenterAmsterdam 2300The Netherlands Division of Gastroenterology and Hepatology Sheikh Shakhbout Medical CityAbu Dhabi 11001United Arab Emirates Section of Gastroenterology and Hepatology Michael E.DeBakey VA Medical Center and Baylor College of MedicineHoustonTX 77030United States Section of Health Services Research Michael E.DeBakey VA Medical Center and Baylor College of MedicineHoustonTX 77030United States Section of Cardiology Michael E.DeBakey VA Medical CenterHoustonTX 77030United States

The development of artificial intelligence(AI)has increased dramatically in the last 20 years,with clinical applications progressively being explored for most of the medical *** field of gastroenterology and hepatology,substantially reliant on vast amounts of imaging studies,is not an *** clinical applications of AI systems in this field include the identification of premalignant or malignant lesions(e.g.,identification of dysplasia or esophageal adenocarcinoma in Barrett’s esophagus,pancreatic malignancies),detection of lesions(e.g.,polyp identification and classification,small-bowel bleeding lesion on capsule endoscopy,pancreatic cystic lesions),development of objective scoring systems for risk stratification,predicting disease prognosis or treatment response[e.g.,determining survival in patients post-resection of hepatocellular carcinoma),determining which patients with inflammatory bowel disease(IBD)will benefit from biologic therapy],or evaluation of metrics such as bowel preparation score or quality of endoscopic *** objective of this comprehensive review is to analyze the available AI-related studies pertaining to the entirety of the gastrointestinal tract,including the upper,middle and lower tracts;IBD;the hepatobiliary system;and the pancreas,discussing the findings and clinical applications,as well as outlining the current limitations and future directions in this field.

关键词： Artificial intelligence Machine learning Deep learning Clinical applications Gastroenterology

Differentiation between Benign and Malignant Breast Lesions Using ADC on Diffusion-Weighted Imaging at 3.0 T

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Open Journal of Radiology 2016年第1期6卷 1-9页

作者： Vikash kr Gupta Wanhua Liu Rui Wang Yuanyuan Ye Jing Jiang Department of Radiology School of medicine Zhongda Hospital Southeast University Nanjing China

Aim: To investigate the diagnostic efficiency of apparent diffusion coefficient value (ADC) in differentiating benign from malignant breast lesions at 3.0 T diffusion-weighted imaging with different pair of b value. Methods: Total 110 patients with 107 lesions (44 benign and 63 malignant) were selected for our study with five different b-values 0, 400, 800, 1200 and 1600 s/mm2. ADC values were calculated using different pairs of b values. The cut-off ADC values and diagnostic efficiency were evaluated by receiver operating characteristic analysis. Comparison of Mean ADC value for breast lesions was determined by using independent sample t test. ROC curves were used for diagnostic efficiency of ADC using different pairs of b values. Results: With increase of b value, mean ADC value decreases. The mean ADC values for benign were 1.73 × 10-3 mm2/s for b 0 and 400, 1.57 × 10-3 mm2/s for b 0 and 800, 1.43 × 10-3 mm2/s for b 0 and 1200 and 1.30 × 10-3 mm2/s for b 0 and 1600 s/mm2. The mean ADC values for the malignant breast lesion were 1.21 × 10-3 mm2/s for b 0 and 400, 1.06 × 10-3 mm2/s for b 0 and 800, 0.94 × 10-3 mm2/s for b 0 and 1200 and 0.86 × 10-3 mm2/s for b 0 and 1600 s/mm2. ADC diagnostic efficiency for benign and malignant lesion for all the pair of b value combination was significant (p > 0.05). The sensitivity, specificity, PPV, NPV and accuracy were 80.95%, 90.9%, 92.72%, 76.92%, 85.04% for b 0 and 400;84.12%, 90.9%, 92.98%, 80%, 86.91% for b 0 and 800;84.12%, 90.9%, 92.98%, 80%, 86.91% for b 0 and 1200;84.12%, 90.9%, 92.98%, 80%, 86.91% for b 0 and 1600 s/mm2 respectively. Conclusion: DWI is effective in differentiating benign and malignant breast lesion at 3.0 Tesla using ADC with higher b value combination.

关键词： Diffusion-Weighted Magnetic Resonance Imaging b-Values Apparent Diffusion Coefficient Breast Lesion

Vitamin B12 deficiency and gastric histopathology in older patients

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World Journal of Gastroenterology 2005年第45期11卷 7078-7083页

作者： kr Dholakia TS Dharmarajan D Yadav S Oiseth EP Norkus CS Pitchumoni Department of Medicine University Hospital of New York Medical College ValhallaNYUnited States Department of Pathology Department of Medical Research

AIM: To compare upper gastric endoscopic and histopathologic findings in older adults in the presence and absence of B12 ***: A prospective analysis of upper gastric endoscopic and gastric histopathologic findings from 30 newly identified B12-deficient patients (11 males,19 females) and 16 controls with normal B12 status (6males, 10 females) was performed. For all subjects, the indication for upper endoscopy and gastric biopsy were unrelated to B12 status. A single pathologist, blinded to B12 status, processed and interpreted the biopsy samples. Endoscopic and histopathologic findings were correlated with age, gender, hematocrit (Hct), MCV and B12 ***: The B12-deficient group had significantly lower mean serum B12 levels compared to the controls (P＜0.00005) while their mean Hct, MCV and serum albumin levels were similar. Iron deficiency (ferritinbased) was present in 21% of B12-deficient patients and intrinsic factor antibodies were present in29% (5/17) of B12-deficient patients. The endoscopic findings revealed significantly different rates of gastritis and atrophy between the B12-deficient and control groups (P= 0.017).B12-deficient patients had significantly less superficial gastritis (62% vs 94%) and significantly more atrophic gastritis (28% vs 0%) as compared to the controls (P= 0.039). Intestinal metaplasia was similar in both groups. Helicobacter pyloriinfection rates were similar in the B12-deficient patients and controls (40% vs31%).CONCLUSION: Significantly different endoscopic findings and types of gastritis could often be observed in the presence and absence of B12 deficiency. Atrophy,based on endoscopy, and atrophic gastritis, based on histopathology, suggest the presence of B12 *** histopathology is not influenced by the age,gender, Hct or MCV of the patients.

关键词：维生素B12缺乏症胃疾病组织病理学内窥镜

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足叶草毒素治疗生殖器疣的现状

国外医学（皮肤性病学分册） 1991年第2期17卷 96-98页

作者： Beutner kr 钱恒林

足叶草脂(即鬼臼树脂)用于生殖器疣的治疗已历经50年的研究及临床验证,在过去的10年中又得到进一步的纯化.足叶草毒素已可由患者安全地自己应用,并且作为外生殖器疣的第一线治疗药物为患者和医生逐渐广泛地接受.现简要复习该药进展及患... 详细信息

足叶草脂(即鬼臼树脂)用于生殖器疣的治疗已历经50年的研究及临床验证,在过去的10年中又得到进一步的纯化.足叶草毒素已可由患者安全地自己应用,并且作为外生殖器疣的第一线治疗药物为患者和医生逐渐广泛地接受.现简要复习该药进展及患者应用的情况.

关键词：毒素足叶草毒素生殖器疣疣

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内分泌——皮肤的相互作用

国外医学（皮肤性病学分册） 1989年第6期15卷 350-352页

作者： Feingold kr 龚芳泽

内分泌疾病偶尔以其相关的或诱发的皮肤异常而表现出来,有时,皮肤改变可成为一些患内分泌疾病病人最初和最突出的表现。本文描述了在肾上腺病变、类癌综合征、性激素过多或缺乏、多腺体自身免疫综合征(PGAS)以及多发性内分泌腺瘤综合征... 详细信息

内分泌疾病偶尔以其相关的或诱发的皮肤异常而表现出来,有时,皮肤改变可成为一些患内分泌疾病病人最初和最突出的表现。本文描述了在肾上腺病变、类癌综合征、性激素过多或缺乏、多腺体自身免疫综合征(PGAS)以及多发性内分泌腺瘤综合征中的皮肤损害。并讨论了黑棘皮病(AN)和黄瘤与内分泌疾病的联系,以及两种少见的综合征中所发生的皮肤改变。

关键词：内分泌皮肤相互作用

南非克留格尔国家公园马羚的种群下降:一个备择假说(英文)

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动物学报 2006年第2期52卷 406-409页

作者： R. krGER K. H. ROGERS School of Ani mal Plant and Environmental Science University of the Witwatersrand JohannesburgSouth Africa

本研究报道了1979年以来南非克留格尔国家公园暂时性沼泽边界对马羚( Hippotragus equinus equinus)种群下降的影响。干旱和由此导致的生境退化以及随之产生的食草动物之间的采食竞争是解释马羚种群数量下降的可能假说。我们认为,确定... 详细信息

本研究报道了1979年以来南非克留格尔国家公园暂时性沼泽边界对马羚( Hippotragus equinus equinus)种群下降的影响。干旱和由此导致的生境退化以及随之产生的食草动物之间的采食竞争是解释马羚种群数量下降的可能假说。我们认为,确定马羚的生境斑块选择并测定影响暂时性沼泽边界变化与马羚种群下降的关联性因子,可解释马羚种群下降的备择假说。在北部平原区,边界呈斑块状分布的沼泽是马羚的高矿质采食源。实施狩猎管理工程期间,人工做成的大多数水道分布于沼泽边界及其附近,造成马羚与其它食草动物的采食竞争和天敌捕食压力的增高。旱季降雨的缺乏,加上沼泽边界区域采食竞争以及天敌捕食压力,是引发马羚在北部平原生境普遍退化之前其种群提前下降的因素[动物学报52 (2) : 406 -409 , 2006]。

关键词：马羚沼泽边界生境退化

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酶联免疫吸附法测定水中异丙隆

环境科学学报 2003年第3期23卷 382-385页

作者：李方实 P.kremer A.Kettrup 南京工业大学理学院应用化学系南京210009 德国国家环境和健康研究中心生态化学研究所慕尼黑85764

建立了测定水中异丙隆的酶联免疫吸附法 .灵敏度 0 97μg L ,最低检出限 0 0 3μg L .16种取代脲类除草剂的交叉反应率低于 2 2 % .水样可不经分离提取直接测定 .10 %甲醇、2 %乙腈和 2 %乙醇不影响测定 .比较了 11种与异丙隆结构相... 详细信息

建立了测定水中异丙隆的酶联免疫吸附法 .灵敏度 0 97μg L ,最低检出限 0 0 3μg L .16种取代脲类除草剂的交叉反应率低于 2 2 % .水样可不经分离提取直接测定 .10 %甲醇、2 %乙腈和 2 %乙醇不影响测定 .比较了 11种与异丙隆结构相近的半抗原的活性 .

关键词：酶联免疫吸附法测定饮用水异丙隆取代脲类除草剂