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Bloating and functional gastro-intestinal disorders: Where are we and where are we going? 被引量:9
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作者 Paola Iovino Cristina Bucci +2 位作者 Fabrizio Tremolaterra Antonella Santonicola Giuseppe Chiarioni 《World Journal of Gastroenterology》 SCIE CAS 2014年第39期14407-14419,共13页
Bloating is one of the most common and bothersome symptoms complained by a large proportion of patients. This symptom has been described with various definitions, such as sensation of a distended abdomen or an abdomin... Bloating is one of the most common and bothersome symptoms complained by a large proportion of patients. This symptom has been described with various definitions, such as sensation of a distended abdomen or an abdominal tension or even excessive gas in the abdomen, although bloating should probably be defined as the feeling (e.g. a subjective sensation) of increased pressure within the abdomen. It is usually associated with functional gastrointestinal disorders, like irritable bowel syndrome, but when bloating is not part of another functional bowel or gastrointestinal disorder it is included as an independent entity in Rome III criteria named functional bloating. In terms of diagnosis, major difficulties are due to the lack of measurable parameters to assess and grade this symptom. In addition, it is still unclear to what extent the individual patient complaint of subjective bloating correlates with the objective evidence of abdominal distension. In fact, despite its clinical, social and economic relevance, bloating lacks a clear pathophysiology explanation, and an effective management endorsement, turning this common symptom into a true challenge for both patients and clinicians. Different theories on bloating etiology call into questions an increased luminal contents (gas, stools, liquid or fat) and/or an impaired abdominal empting and/or an altered intra-abdominal volume displacement (abdomino-phrenic theory) and/or an increased perception of intestinal stimuli with a subsequent use of empirical treatments (diet modifications, antibiotics and/or probiotics, prokinetic drugs, antispasmodics, gas reducing agents and tricyclic antidepressants). In this review, our aim was to review the latest knowledge on bloating physiopathology and therapeutic options trying to shed lights on those processes where a clinician could intervene to modify disease course. 展开更多
关键词 BLOATING Functional gastro-intestinal disorders Irritable bowel syndrome Constipation Diarrhea
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Assessment of in Situ Anthelminthic Activity of Ethanolic Extract of Bidens pilosa against Adult’s Gastro-Intestinal Strongyle of Small Ruminants 被引量:1
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作者 Mbogning Tayo Gertrude Yondo Jeannette +1 位作者 Tsila Henri Gabriel Mpoame Mbida 《American Journal of Plant Sciences》 2022年第4期433-442,共10页
Infections caused by gastrointestinal nematodes are major threats to livestock industry in the developing countries. They cause direct effects in form of loss in production and indirect economic losses due to high cos... Infections caused by gastrointestinal nematodes are major threats to livestock industry in the developing countries. They cause direct effects in form of loss in production and indirect economic losses due to high cost of anthelmintic drugs. Various alternative strategies are in practice to control parasitism which includes the usage of medicinal plants. This study evaluates the in situ anthelminthic activity of Bidens pilosa ethanolic extract on gastro-intestinal strongyles of small ruminants. Twenty (20) naturally infested goats of both sexes were distributed into 5 groups (n = 4) corresponding to groups receiving Tween 80 at 2.8%, Albendazole at 5 mg/kg and the three doses of extract (125, 250 and 500 mg/kg). The doses of extract and 2.8% Tween 80 were administered twice daily for 3 consecutive days while Albendazole was administered in a single dose. Faecal eggs count reduction, body weight, packed cell volume (PCV) and total worm count reduction were determined. Results showed that the ethanolic extract of B. pilosa was not effective against adult worms while Albendozole inflicted a 100% reduction of eggs count and total worm count of digestive strongyle. Body weight and PCV remain almost constant. This study indicates that ethanolic extract of B. pilosa at tested doses has no anthelminthic activity. However, further optimization and standardization of the ethanolic extract of B. pilosa could enhance its anthelminthic activity. 展开更多
关键词 gastro-intestinal Strongyle Bidens pilosa Anthelminthic Activity in Situ
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Common Gastro-Intestinal Parasites of Goats (<i>Capra aegagrus hircus</i>) from Mogadishu, Somalia
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作者 Mohamed Ibrahim Abdi-Soojeede 《Open Journal of Veterinary Medicine》 2018年第12期232-240,共9页
This study was conducted in two districts in Mogadishu, particularly smallholders to determine the Common gastrointestinal (GIT) parasites of Somali Goats. During the last two years, researchers meet many cases of goa... This study was conducted in two districts in Mogadishu, particularly smallholders to determine the Common gastrointestinal (GIT) parasites of Somali Goats. During the last two years, researchers meet many cases of goats having diarrhea, anemia and loss of body weight. That is the reason to conduct this study. The methodology of this study is explanation research with using lab technician for studied current prevalence cases of gastro-intestinal parasite of goat in Mogadishu Somalia. Study areas were two districts (Dayniile and Wadajir) located in Mogadishu Benadir region, Somali. Researcher has collected sample of feces from Somali goats in smallholders and transported the fecal containing box to the laboratory Room at University campus. Researchers made examination of fecal using Direct Smear Fecal Exam and then used Light microscope for identification of parasite eggs and oocytes, with 10× or 40× objective magnification. Data analysis was percentage and P value ≤ 0.005. Result: The result of this study revealed an overall prevalence of Gastro-intestinal parasites of Somali goats in the investigated area was 72.1% that means 62 samples were positive, and 24 samples were negative of gastro-intestinal parasites. Haemonchus spp (Nematodes) and Coccidia (Eimeria spp) were the most prevalent parasites recorded in all the 62 positive samples, having Haemonchus 23 (26.74%) and Eimeria spp 38 (44.19%);the second highest groups were all nematode with percentage Strongyloides 22 (25.58%), and Trichostrongylus 17 (19.77%). This study revealed statistically significant difference (P 0.05 that equals to P = 0.235. Recommendation: Researcher recommends making seasonal deworming to Somali goats in small holders which will reduce the prevalence and incidence of gastro-intestinal parasites in Somali goats. 展开更多
关键词 gastro-intestinal Parasites Goats Mogadishu SOMALIA
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Gastro-Intestinal Parasites of Camels (Camelus dromedarius) from Mogadishu, Somalia
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作者 Abdalla M. Ibrahim Ahmed A. H. Kadle Abdulkarim A. Yusuf 《Open Journal of Veterinary Medicine》 2016年第7期112-118,共8页
Somalia has the largest dromedary (Camelus dromedarius) population in the world. However, scientific research and camel diseases investigation in the country were lacking since 1980s. A total of 167 camels (131 semi-i... Somalia has the largest dromedary (Camelus dromedarius) population in the world. However, scientific research and camel diseases investigation in the country were lacking since 1980s. A total of 167 camels (131 semi-intensive dairy camels system and 36 free grazing systems) were sampled from three districts in Mogadishu citybetween December 2015 and March 2016 to investigate the prevalence rate of gastro-intestinal parasites in camels from Mogadishu city using different coprological techniques. The overall prevalence of camel gastro-intestinal parasites was 50.3%. The prevalence rate were significantly varies between the extensive and semi-intensive production systems (p = 0.000) and between the different districts (p = 0.000). Nematodes revealed higher prevalence rate (47.9%) than Cestodes (6.0%), Trematodes (4.2%) and Coccidia (0.65%). Eggs of eight genera of nematodes, two genera of trematodes and two genera of cestodes as well as Eimeria sp. Oocysts were identified in this study. Dictyocaulus sp. and Trichostrongylus sp. were the most prevalent followed by Parascaris equorum and Strongyloides sp. About 56.0% of the infected camels revealed mix-infection of up to five different parasite species. Moreover, 35.7% of these animals revealed heavy infection. The important role of the camel has inspired investigators and researchers to look for diseases that may threaten camel health and production. However, in Somalia in spite of having the largest counts of camels but in depth scientific data are not available. Therefore, the present paper was to be the first detailed data on camel gastro-intestinal parasites in Mogadishu area and may be in whole Somalia. We came to conclude that gastrointes-tinal parasites were highly prevalent in camels from Mogadishu particularly in nomadic herds of camels. Studies on the effect of gastro-intestinal parasites on camel production and productivity are recommended. Moreover, the intensive system of camel production should be encouraged. 展开更多
关键词 gastro-intestinal Parasites CAMELS Abrar Mogadishu SOMALIA
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Validity of Upper Gastro-Intestinal Endoscopic Screening in HCV Cirrhotic Patients Awaiting Antiviral Therapy
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作者 Salem Y. Mohamed Bassim A. Gaballah Mohamed H. Emara 《Open Journal of Gastroenterology》 2015年第12期191-199,共9页
Background and Aim: The Egyptian Ministry of Health initiated a nationwide HCV treatment program with the newly developed oral antiviral therapies and formulated national guidelines for treatment allocation which gave... Background and Aim: The Egyptian Ministry of Health initiated a nationwide HCV treatment program with the newly developed oral antiviral therapies and formulated national guidelines for treatment allocation which gave favor for patients with advanced fibrosis and early cirrhosis. One of the recommendations for treatment was upper Gastro-intestinal (GIT) endoscopy. This study aimed at estimating the prevalence of varices among those patients and judging the validity of this national recommendation. Methods: This study was carried out at gastrointestinal endoscopy units, Zagazig University Hospitals through the year 2014. The epidemiologic, clinical features and endoscopic findings of patients undergoing preparation for HCV therapy were analyzed. Endoscopic classifications of esophageal and gastric varices were carried out after the Italian liver cirrhosis project and Sarin’s classification respectively. Results: Totally 1143 patients performed upper GIT endoscopy as preparation for HCV treatment. This comprised 22% of all patients undergoing upper GIT endoscopy over that year. There was a fourfold rise in percentage of patients undergoing endoscopy for sofosbuvir-based therapy in this year (22%) when compared to assessment for Interferon/Ribavirin combination therapy (5%) in the previous year. A total of 361 patients had no esophageal or gastric varices. Small sized (grade I), medium sized (grade II) and large sized (grade III) varices were reported in 301, 188 and 293 patients respectively. Thirty patients (2.6%) had gastric varices. The prevalence of varices was higher in Child B in comparison to Child A (statistically not significant, p = 0.243). Conclusion: Screening endoscopy for early cirrhotic patients awaiting oral anti-HCV therapy is valid. 展开更多
关键词 UPPER gastro-intestinal Endoscopy HCV Cirrhosis Sofosbuvir Esophageal VARICES Gastric VARICES Direct ACTING ANTIVIRALS
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Paradoxical association between dyspepsia and autoimmune chronic atrophic gastritis:Insights into mechanisms,pathophysiology,and treatment options 被引量:5
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作者 Roberta Elisa Rossi Alessandra Elvevi +4 位作者 Valentina Sciola Francesco Vito Mandarino Silvio Danese Pietro Invernizzi Sara Massironi 《World Journal of Gastroenterology》 SCIE CAS 2023年第23期3733-3747,共15页
BACKGROUND Autoimmune gastritis(AIG)is a progressive,chronic,immune-mediated inflammatory disease characterized by the destruction of gastric parietal cells leading to hypo/anacidity and loss of intrinsic factor.Gastr... BACKGROUND Autoimmune gastritis(AIG)is a progressive,chronic,immune-mediated inflammatory disease characterized by the destruction of gastric parietal cells leading to hypo/anacidity and loss of intrinsic factor.Gastrointestinal symptoms such as dyspepsia and early satiety are very common,being second in terms of frequency only to anemia,which is the most typical feature of AIG.AIM To address both well-established and more innovative information and knowledge about this challenging disorder.METHODS An extensive bibliographical search was performed in PubMed to identify guidelines and primary literature(retrospective and prospective studies,systematic reviews,case series)published in the last 10 years.RESULTS A total of 125 records were reviewed and 80 were defined as fulfilling the criteria.CONCLUSION AIG can cause a range of clinical manifestations,including dyspepsia.The pathophysiology of dyspepsia in AIG is complex and involves changes in acid secretion,gastric motility,hormone signaling,and gut microbiota,among other factors.Managing dyspeptic symptoms of AIG is challenging and there are no specific therapies targeting dyspepsia in AIG.While proton pump inhibitors are commonly used to treat dyspepsia and gastroesophageal reflux disease,they may not be appropriate for AIG.Prokinetic agents,antidepressant drugs,and non-pharmacological treatments may be of help,even if not adequately evidence-based supported.A multidisciplinary approach for the management of dyspepsia in AIG is recommended,and further research is needed to develop and validate more effective therapies for dyspepsia. 展开更多
关键词 DYSPEPSIA Dyspeptic symptoms gastro-intestinal symptoms Autoimmune gastritis Chronic autoimmune atrophic gastritis Treatment
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Uncharted Territory: Frequent Relapsing, Steroid Sensitive Secondary Minimal Change Nephrotic Syndrome Cause by Solid Tumor of the Gastro-Esophageal Junction —(Case Presentation and Review of the Literature)
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作者 Awad Magbri Mariam El-Magbri +1 位作者 Reshma Shamnarine Pablo Abrego Hernandez 《Open Journal of Nephrology》 CAS 2023年第1期13-19,共7页
We reported a biopsy proved case of minimal change nephrotic syndrome in a 72-year-old patient. The minimal change nephrotic syndrome has been steroid sensitive, but the patient had 7 relapses over a span of 5 years. ... We reported a biopsy proved case of minimal change nephrotic syndrome in a 72-year-old patient. The minimal change nephrotic syndrome has been steroid sensitive, but the patient had 7 relapses over a span of 5 years. Each time the dose of steroid is tapered, a relapse of the nephrotic syndrome occurred. Eventually, the patient was complaining of dysphagia and difficulty swallowing. Hospital work-up with barium swallow, endoscopy, and CT of the chest, abdomen and pelvis, revealed a focal stenotic lesion with mild to moderate esophageal dysmotility 7/15/2022. A diagnosis of an ulcerating lesion with biopsy confirmed a neuro-endocrine carcinoma of the gastro-esophageal junction was entertained. The CT of the chest/abdomen/pelvis, 7/19/2022, has shown, an esophageal mass of 5.1 × 5.6 × 7 cm of the gastro-esophageal junction with ulceration. No evidence of spread beyond the esophagus and stomach. The histology revealed a poorly differentiated neuroendocrine tumor of the gastro-esophageal junction. The patient underwent several rounds of chemotherapy, radiation, and surgery culminating in tumor control. His nephrotic syndrome was resolved after the tumor has been controlled by surgery and chemotherapy. 展开更多
关键词 Frequent Relapsing Nephrotic Syndrome Steroid Sensitive Nephrotic Syndrome Secondary Nephrotic Syndrome Solid gastro-intestinal Tumor Minimal Change Nephrotic Syndrome Neuro-Endocrine Tumor of the Gastro-Esophageal Junction Paraneoplastic Glomerulopathy
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混沌扩频序列有限精度研究 被引量:6
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作者 吴芝路 任广辉 +1 位作者 赵楠 杨水旺 《哈尔滨商业大学学报(自然科学版)》 CAS 2006年第1期42-45,共4页
对混沌序列有限精度下限进行了研究,结果表明,经典混沌序列所需精度非常高,而现有几种对Logistic混沌序列进行改进的方法使其所需精度明显下降.对这些方法进行了分析比较和改进,改进后计算量明显降低,硬件实现更加容易.
关键词 混沌扩频序列 有限精度效应 精度下限 相关函数
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颈部微小切口腔镜治疗甲状腺腺瘤疗效评价及术后凝血障碍发生的影响因素分析 被引量:13
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作者 夏非 华清泉 《中南医学科学杂志》 CAS 2017年第5期492-495,共4页
目的评价颈部微小切口腔镜治疗甲状腺腺瘤疗效及探讨术后凝血障碍发生的影响因素。方法选取本院就诊并接受颈部微小切口腔镜治疗治疗和传统甲状腺切除术治疗的患者共235例,其中110例为接受颈部微小切口腔镜治疗者(微创手术组);125例接... 目的评价颈部微小切口腔镜治疗甲状腺腺瘤疗效及探讨术后凝血障碍发生的影响因素。方法选取本院就诊并接受颈部微小切口腔镜治疗治疗和传统甲状腺切除术治疗的患者共235例,其中110例为接受颈部微小切口腔镜治疗者(微创手术组);125例接受传统甲状腺切除术患者(对照组)。比较和分析两组治疗效果及影响术后凝血障碍的因素。结果微创手术组患者手术时间、术中出血量、住院天数以及术后不良反应均显著低于对照组。两组患者术后血浆凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)均低于正常值,纤维蛋白原水平均较正常值有所增高,存在潜在血栓可能,但未见显著差别。结论颈部微小切口腔镜手术方式疗效确切,手术时间短、切口小、安全性高。 展开更多
关键词 颈部 微小切口腔镜手术 甲状腺腺瘤 凝血功能
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孟鲁司特钠联合匹多莫德治疗对反复呼吸道感染患儿肺功能及免疫功能的影响 被引量:13
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作者 李玉佳 杜侃 +1 位作者 屈素清 杨辉 《转化医学杂志》 2018年第2期82-85,120,共5页
目的探究孟鲁司特钠联合匹多莫德治疗对反复呼吸道感染(recurrent respiratory tract infections,RRTI)患儿肺功能及免疫功能的影响。方法选取2015年1月至2016年1月间就诊于海军总医院儿科门诊的RRTI患儿78例,根据随机数字法将其分为对... 目的探究孟鲁司特钠联合匹多莫德治疗对反复呼吸道感染(recurrent respiratory tract infections,RRTI)患儿肺功能及免疫功能的影响。方法选取2015年1月至2016年1月间就诊于海军总医院儿科门诊的RRTI患儿78例,根据随机数字法将其分为对照组和观察组,各39例。2组患者均予以匹多莫德,口服,予雾化治疗及积极抗感染等一般常规治疗,在此基础上,观察组患者予以口服孟鲁司特钠治疗,疗程3个月。疗程结束后,比较2组患者治疗总有效率、临床症候、肺功能、免疫功能。结果观察组患者治疗有效率(94.87%)明显高于对照组(61.54%),差异具有统计学意义(χ2=12.71,P=0.00);观察组咳嗽消失时间明显短于对照组,差异有统计学意义(t=5.82,P=0.00);观察组喘息消失、退热、肺内啰音消失的时间均低于对照组,但差异均无统计学意义(P>0.05);2组患者治疗后用力肺活量、1秒用力呼气容积、1秒用力呼气容积/用力肺活量、50%最大呼气流量和最大呼气流量水平明显高于治疗前,且观察组明显高于对照组,差异均有统计学意义(P<0.05);2组患者血清免疫球蛋白(immunoglobulin,Ig)G、Ig A、Ig M、分化簇(cluster of differentiation,CD)3+、CD4+及CD4+/CD8+水平均明显高于治疗前,差异均有统计学意义(P<0.05)。结论在一般常规治疗基础上,孟鲁司特钠联合匹多莫德治疗RRTI患儿比单纯应用匹多莫德具有总有效率更高、症候改善更明显,并能更加有效改善肺功能及免疫功能,值得在临床推广使用。 展开更多
关键词 反复呼吸道感染 孟鲁司特钠 匹多莫德 肺功能 免疫功能 儿童
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清肠合剂对急性弥漫性腹膜炎患者胃肠功能和并发症的影响 被引量:5
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作者 陈世兵 《中国药业》 CAS 2016年第2期124-126,共3页
目的观察清肠合剂对急性弥漫性腹膜炎患者胃肠功能和并发症的影响并探讨护理对策。方法选取医院收治的急性腹膜炎患者80例,随机分为治疗组与对照组,各40例。所有患者均在气管插管全身麻醉(简称全麻)下行手术治疗,术后予以常规治疗,包括... 目的观察清肠合剂对急性弥漫性腹膜炎患者胃肠功能和并发症的影响并探讨护理对策。方法选取医院收治的急性腹膜炎患者80例,随机分为治疗组与对照组,各40例。所有患者均在气管插管全身麻醉(简称全麻)下行手术治疗,术后予以常规治疗,包括禁食、胃肠减压、补液及抗感染,并配合常规护理。在此基础上,治疗组术后6 h予中药清肠合剂保留灌肠。结果治疗组的总有效率为95.00%,显著高于对照组的85.00%(P<0.05);治疗后,治疗组肠鸣音恢复时间、肛门排气时间、肛门排便时间恢复上皆明显短于对照组(P<0.05);治疗组患者腹胀发生率为10.00%,显著低于对照组的17.50%(P<0.05);治疗组术后无肠梗阻发生,对照组的发生率为5.00%(P<0.05);治疗组切口感染率为7.50%,显著低于对照组的15.00%(P<0.05);治疗组死亡率、住院时间均显著低于对照组,患者满意度明显高于对照组(P<0.05);治疗组患者并未出现与药品相关的不良反应。结论急性腹膜炎患者术后采用清肠合剂灌肠,并配合有针对性的护理干预能提高临床疗效,可促进患者胃肠功能恢复,降低早期切口感染、腹胀及感染性肠梗阻的发生率,同时可有效减轻患者死亡率,缩短住院时间,提高患者满意度,且安全有效,值得临床推广。 展开更多
关键词 清肠合剂 急性弥漫性腹膜炎 胃肠功能 并发症 护理
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慢性肾衰竭血液透析患者容量超负荷与炎症因子和心功能的关系 被引量:8
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作者 李艳娟 《转化医学杂志》 2017年第6期366-369,376,共5页
目的探讨慢性肾衰竭血液透析患者容量超负荷与炎症因子、心功能的关系。方法以行维持性血液透析治疗6个月以上的非显性水肿慢性肾衰竭患者38例为研究组,血液透析后30 min采用生物电阻抗技术测定多余细胞外液和干体重(dry weight,DW),根... 目的探讨慢性肾衰竭血液透析患者容量超负荷与炎症因子、心功能的关系。方法以行维持性血液透析治疗6个月以上的非显性水肿慢性肾衰竭患者38例为研究组,血液透析后30 min采用生物电阻抗技术测定多余细胞外液和干体重(dry weight,DW),根据DW分为达标组(-1≤DW≤1,n=16)和负荷组(DW>1,n=22);30例同期健康查体志愿者为对照组。对负荷组进行为期3个月的DW调整,并根据DW是否达标分为A组(达标,n=12)和B组(未达标,n=10)2个亚组。采用酶联免疫吸附法检测研究对象炎症因子白介素-6(Interleukin-6,IL-6)、肿瘤坏死因子-α(tumor necrosis factor-alpha,TNF-α)水平和心功能指标左室射血分数(left ventricular ejection fraction,LVEF)。采用Spearman相关分析法分析患者DW与血清IL-6、TNF-α水平及LVEF的关系,并采用受试者工作特征曲线分析患者血清IL-6、TNF-α水平评估对容量超负荷的价值。结果与对照组比较,研究组血清IL-6、TNF-α水平均升高(P<0.01),而LVEF则降低(P<0.01)。与达标组比较,负荷组血清IL-6、TNF-α水平均升高(P<0.01),而LVEF则降低(P<0.01)。与DW调整前比较,负荷组调整后的血清IL-6、TNF-α水平均降低(P<0.01),而LVEF则升高(P<0.01)。与A组比较,B组血清IL-6、TNF-α水平均升高(P<0.01),而LVEF则降低(P<0.01)。Spearman相关分析显示,患者DW与血清IL-6、TNF-α水平均呈正相关(r分别为0.758、0.775,P<0.05),与LVEF则呈负相关(r=-0.722、P<0.05)。受试者工作特征曲线分析,患者血清IL-6、TNF-α水平评估对容量超负荷的价值良好,其中以两者联合评估对容量超负荷的价值最优。结论慢性肾衰竭血液透析患者容量超负荷与炎症因子、心功能均密切相关,炎症因子水平可作为慢性肾衰竭血液透析患者容量超负荷评估的参考指标,而进行容量管理可能有利于慢性肾衰竭血液透析患者炎症反应的控制及心功能的改善。 展开更多
关键词 慢性肾衰竭 血液透析 容量超负荷 炎症因子 心功能
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基于远红外技术的车载辅助驾驶系统的优化 被引量:1
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作者 史骏 《信息技术》 2017年第12期70-72,75,共4页
随着人们生活水平的提高,车辆的增多导致交通事故的频发。远红外摄像头的辅助驾驶系统的研究对预防和减少交通事故的发生起到显著的效果。文中以远红外摄像头作为视频采集的设备,基于Fisher评价函数的多阈值红外图像分割算法以及色彩知... 随着人们生活水平的提高,车辆的增多导致交通事故的频发。远红外摄像头的辅助驾驶系统的研究对预防和减少交通事故的发生起到显著的效果。文中以远红外摄像头作为视频采集的设备,基于Fisher评价函数的多阈值红外图像分割算法以及色彩知识的远红外图像上色算法,从算法计算中得到的阈值而对红外视频进行景物区分,通过先验知识对不同景物添加彩色。通过实验结果显示,提出的算法完成了对车载远红外视频的彩色化,算法得到的色彩图像有效可靠,能够帮助驾驶员进行实物认知,该算法有很好的实用性和合理性。 展开更多
关键词 辅助驾驶系统 FISHER评价函数 远红外技术 视频彩色化
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新闻媒体追究政府生态责任的职能定位
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作者 黄爱宝 《南京工业大学学报(社会科学版)》 2016年第3期5-11,共7页
在中国特色的政府生态责任追究制度建设中,新闻媒体在追究政府生态责任中的职能定位是亟待回答的挑战性课题。新闻媒体的"不缺位"是因其自身特质决定了它在追究政府生态责任中的特殊功能,决定了它应当成为追究政府生态责任的... 在中国特色的政府生态责任追究制度建设中,新闻媒体在追究政府生态责任中的职能定位是亟待回答的挑战性课题。新闻媒体的"不缺位"是因其自身特质决定了它在追究政府生态责任中的特殊功能,决定了它应当成为追究政府生态责任的特殊主体。新闻媒体的"不乱位"需要其确定自身职能内容范围边界以及正确履行职能的方式、方法、边界,在追究政府生态责任中既要避免将权利混同于权力的"越位",也要克服超越自身应有权利内容范围和运用不恰当的方法行使权利的"错位"。新闻媒体的"善补位"就是新闻媒体在与其他政府生态责任追究主体的关系中做到"不缺位"和"不乱位":在新闻媒体与其他追责主体职能边界清晰的条件下,新闻媒体必须做到"不越位"和"不错位";在新闻媒体与其他追责主体职能边界模糊或重叠的条件下,新闻媒体应当在弥补其他追责主体职能履行不足中做到"不缺位"和"不错位"。 展开更多
关键词 新闻媒体追责职能 追究政府生态责任 媒体职能定位 媒体权力定位
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关于高阶微分中值定理的逆命题
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作者 张庆政 《怀化学院学报》 1995年第2期78-81,共4页
本文在函数凹凸和严格凹凸的条件下,证明了高阶Cauchy中值定理和高阶La-grange中值定理的逆命题.
关键词 中值定理 逆命题 凹凸函数 严格凹凸函数
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一种改进的量子神经网络频谱感知算法 被引量:5
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作者 赵阳 孙学斌 周正 《无线电通信技术》 2015年第2期7-11,共5页
为了克服传统频谱感知的缺点,提升在低信噪比下的频谱检测性能,提出了一种改进的量子神经网络频谱感知算法。通过提取授权用户信号的特征参数,对量子神经网络进行训练,获取授权信号中数据的不确定性并加以存储、记忆,从而实现周围环境&q... 为了克服传统频谱感知的缺点,提升在低信噪比下的频谱检测性能,提出了一种改进的量子神经网络频谱感知算法。通过提取授权用户信号的特征参数,对量子神经网络进行训练,获取授权信号中数据的不确定性并加以存储、记忆,从而实现周围环境"频谱机会"的检测。为了提高量子神经网络的收敛性、稳定性,对算法进行改进,采用三层Josephson函数作为激励函数,缩短激励函数的饱和区,减少训练过程中出现"假饱和"现象;并在原有的学习目标函数中加入约束条件,使网络权值的调整和量子间隔的更新在学习过程中的相互影响降到最低。通过实验仿真得出,改进后的量子神经网络算法与改进前的算法、BP神经网络检测算法相比,不但在网络收敛速度和稳定性上有了明显提升,而且在低信噪比情况下具有更高的检测概率。 展开更多
关键词 认知无线电 频谱感知 量子神经网络 多层激励函数 Josephson函数
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Cholecystectomy and the risk of alimentary tract cancers:A systematic review 被引量:13
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作者 Maria Coats Sami M Shimi 《World Journal of Gastroenterology》 SCIE CAS 2015年第12期3679-3693,共15页
AIM: To investigate the association between cholecystectomy and gastro-intestinal tract(GIT) cancers.METHODS: We conducted a systematic review according to the PRISMA guidelines. A MEDLINE search was performed with pr... AIM: To investigate the association between cholecystectomy and gastro-intestinal tract(GIT) cancers.METHODS: We conducted a systematic review according to the PRISMA guidelines. A MEDLINE search was performed with predefined search criteria for English Language articles on the association between cholecystectomy and GIT cancers. Additional articles were retrieved by manual search of references. All relevant articles were accessed in full text. Data onstudy type; cases; controls; country; effect estimate; adjustments for confounders and quality of publication were extracted. The quality of the publications were scored by adherence to the STROBE checklist. The data for each part of the GIT were presented in separate tables.RESULTS: Seventy-five studies and 5 meta-analyses satisfied the predefined criteria for inclusion and were included in this review. There were inconsistent reports and no strong evidence of an association between cholecystectomy and cancers of the oesophagus(Adenocarcinoma), pancreas, small bowel and rightsided colon cancers. In squamous cancer of the oesophagus, cancers of the stomach, liver, bile ducts, small bowel and left sided colon cancers, good quality studies suggested a lack of association with cholecystectomy. Equally, distal colon and rectal cancers were found not to be associated with cholecystectomy. Several mechanisms for carcinogenesis/promotion of carcinogensis have been proposed. These have focused on a role for bile salts in carcinogenesis with several potential mutagenic molecular events and gut metabolic hormones signaling cell proliferation or initiation of carcinogenesis.CONCLUSION: This is a comprehensive review of the association between GIT cancers and cholecystectomy. This review found no clear association between cholecystectomy and GIT cancers. 展开更多
关键词 CHOLECYSTECTOMY Cancer gastro-intestinal TRACT CAR
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海军潜艇某部艇员下腰痛的脊柱功能调查与分析 被引量:5
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作者 费奥 赵宏 +4 位作者 张新京 宋修林 张杨 甘维军 王丽华 《转化医学杂志》 2018年第2期114-117,共4页
目的了解潜艇艇员下腰痛的患病及其脊柱功能状况,并分析相关影响因素。方法通过问卷调查海军某潜艇基地现役艇员的一般情况、职业、生活习惯和下腰痛等情况。按照纳入标准确定143例下腰痛艇员,入选者采用疼痛视觉模拟评分法、专项体格... 目的了解潜艇艇员下腰痛的患病及其脊柱功能状况,并分析相关影响因素。方法通过问卷调查海军某潜艇基地现役艇员的一般情况、职业、生活习惯和下腰痛等情况。按照纳入标准确定143例下腰痛艇员,入选者采用疼痛视觉模拟评分法、专项体格检查及改良Oswestry功能障碍指数进行评估。结果所选取的423例艇员中下腰痛143例,占33.81%,腰部疼痛视觉模拟评分法评分以服役年限≥9年组(8.52±0.68)最高,与其他服役年限组比较差异有统计学意义(P<0.05)。下腰痛艇员Oswestry功能障碍指数总分(37.92±3.22)分,其影响因素与从事专业、服役年限、病程时间、外伤史有关。结论现役艇员中下腰痛发病率较高,脊柱功能状况差,不适症状明显,应积极开展健康教育,提高艇员对疾病的认知能力,建立健康生活习惯。 展开更多
关键词 海军医学 潜艇艇员 下腰痛 脊柱功能
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Facing the challenge of venous thromboembolism prevention in patients undergoing major abdominal surgical procedures for gastrointestinal cancer 被引量:7
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作者 Aikaterini Mastoraki Sotiria Mastoraki +6 位作者 Dimitrios Schizas Raphael Patras Nikolaos Krinos Ioannis S Papanikolaou Andreas Lazaris Theodore Liakakos Nikolaos Arkadopoulos 《World Journal of Gastrointestinal Oncology》 SCIE CAS 2018年第10期328-335,共8页
Venous thromboembolism(VTE)refers to a hypercoa-gulable state that remains an important and preven-table factor in the surgical treatment of malignancies.VTE includes two identical entities with regards to deep vein t... Venous thromboembolism(VTE)refers to a hypercoa-gulable state that remains an important and preven-table factor in the surgical treatment of malignancies.VTE includes two identical entities with regards to deep vein thrombosis and pulmonary embolism.The incidence of VTE after major abdominal interventions for gastro-intestinal,hepato-biliary and pancreatic neoplastic disor-ders is as high as 25%without prophylaxis.Prophylactic use of classic or low-molecular-weight heparin,anti-Xa factors,antithrombotic stocking,intermittent pneumatic compression devices and early mobilization have been described.Nevertheless,thromboprophylaxis is often dis-continued after discharge,although a serious risk may persist long after the initial triggering event,as the coagu-lation system remains active for at least 14 d post-opera-tively.The aim of this review is to evaluate the results of the current practice of VTE prevention in cancer patients undergoing major abdominal surgical operations,with special attention to adequately elucidated guidelinesand widely accepted protocols.In addition,the recent literature is presented in order to provide an update on the current concepts concerning the surgical manage-ment of the disease. 展开更多
关键词 Deep VEIN THROMBOSIS Pulmonary EMBOLISM gastro-intestinal cancer THROMBOPROPHYLAXIS VENOUS THROMBOEMBOLISM
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Endoscopic placement of enteral feeding tubes 被引量:7
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作者 Gerard P Rafferty Tony CK Tham 《World Journal of Gastrointestinal Endoscopy》 CAS 2010年第5期155-164,共10页
Malnutrition is common in patients with acute and chronic illness.Nutritional management of these malnourished patients is an essential part of healthcare.Enteral feeding is one component of nutritional support.It is ... Malnutrition is common in patients with acute and chronic illness.Nutritional management of these malnourished patients is an essential part of healthcare.Enteral feeding is one component of nutritional support.It is the preferred method of nutritional support in patients that are not receiving adequate oral nutrition and have a functioning gastrointestinal tract(GIT).This method of nutritional support has undergone progression over recent times.The method of placement of enteral feeding tubes has evolved due to development of new feeding tubes and endoscopic technology.Enteral feeding can be divided into methods that provide short-term and long-term access to the GIT.This review article focuses on the current range of methods of gaining access to the GIT to provide enteral feed. 展开更多
关键词 ENTERAL feeding Nutrition gastro-intestinal TRACT PERCUTANEOUS JEJUNOSTOMY GASTROSTOMY
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