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辽东白云金矿集区鸡爪金矿床地质特征与找矿方向
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作者 韩东 韩晓涛 +3 位作者 王颖辉 蒋永臻 吴爽 陈军典 《黄金》 CAS 2024年第12期99-105,共7页
白云金矿集区位于辽宁凤城白云—小佟家堡子金矿国家级规划重点勘查区内,沿尖山子断裂由北向南划分为3个矿带,矿带由北向南走向由近东西向转为近北西西向,矿床分布与辽河群大石桥岩组三段和盖县岩组地层分布具有一定的成矿专属性。在该... 白云金矿集区位于辽宁凤城白云—小佟家堡子金矿国家级规划重点勘查区内,沿尖山子断裂由北向南划分为3个矿带,矿带由北向南走向由近东西向转为近北西西向,矿床分布与辽河群大石桥岩组三段和盖县岩组地层分布具有一定的成矿专属性。在该矿集区深边部已取得一定找矿突破。其中,位于白云—冯家—石棚沟北金矿带的鸡爪金矿床是近年来新发现的金矿床。矿区出露地层主要为古元古界辽河群大石桥岩组,运用追索成矿构造带法,探矿工程揭露9条矿体,金平均品位6.41 g/t,银平均品位29.83 g/t。矿体主要赋存于北东东向—近东西向矿化蚀变带,倾向南或西南,倾角10°~70°。矿区东部矿体类型为蚀变岩型,西部为石英脉型。围岩蚀变以钾长石化和硅化为主。金和银等多金属化探异常和低阻高极化物探异常是重要的找矿标志。矿床成因类型为变质-热液型。 展开更多
关键词 爪金矿 地质特征 找矿方向 白云金矿集区 成因 化探异常 物探异常
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吉林省和龙地区鸡南BIF型铁矿床含矿建造地球化学特征及形成时代 被引量:4
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作者 任云生 刘小禾 +4 位作者 商青青 陈聪 杨群 郝宇杰 孙振明 《吉林大学学报(地球科学版)》 EI CAS CSCD 北大核心 2020年第3期800-814,共15页
鸡南铁矿床位于吉林省和龙地区,地处华北克拉通北缘与兴蒙造山带接壤的龙岗地块北部,是东北地区发现较早的BIF型铁矿床之一。该矿床铁矿体主要呈层状、似层状、扁豆状赋存于鞍山群鸡南组上段中部层位,含矿岩石以黑云斜长片麻岩、角闪黑... 鸡南铁矿床位于吉林省和龙地区,地处华北克拉通北缘与兴蒙造山带接壤的龙岗地块北部,是东北地区发现较早的BIF型铁矿床之一。该矿床铁矿体主要呈层状、似层状、扁豆状赋存于鞍山群鸡南组上段中部层位,含矿岩石以黑云斜长片麻岩、角闪黑云斜长片麻岩、黑云角闪斜长片麻岩及斜长角闪岩为主,为角闪岩相的中低级区域变质岩系;主要矿石类型为条带状磁铁石英岩型和块状磁铁角闪岩型。为确定该矿床含矿建造的原岩、变质时代及构造背景,重点对含矿岩系中的斜长角闪岩进行了岩石地球化学和锆石U-Pb年代学研究。结果表明:斜长角闪岩的地球化学特征表现为富集大离子亲石元素、轻微富集重稀土元素;主量元素质量分数与中性-基性岩类基本相似,结合原岩恢复图解,判断其原岩类型为亚碱性玄武岩(拉斑玄武岩),形成于弧后盆地背景;LA-ICP-MS锆石U-Pb年代学研究中,2个较老的锆石测点年龄分别为(2468±15)和(2469±9)Ma,代表区内峰期变质年龄(约2460 Ma),26个锆石测点的测年数据较为集中,加权平均年龄为(2275±25)Ma,代表区内退变质年龄。通过与国内外典型BIF型铁矿床的对比研究认为,区内的鸡南铁矿与官地铁矿同属Algoma型铁矿床。 展开更多
关键词 锆石U-PB定年 地球化学 含矿建造 构造背景 BIF型铁矿 南铁矿 和龙地区
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和龙市鸡南铁矿床地质特征及找矿标志 被引量:5
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作者 张密刚 王雅平 《科技信息》 2009年第29期I0739-I0739,I0782,共2页
鸡南铁矿床产于深变质的太古界基性火山岩——沉积岩(鞍山群鸡南组)建造中,矿体与变质的火山岩、火山碎屑岩类岩石关系密切共生。矿床成因类型为沉积变质铁矿类型,地层标志、地面磁异常标志及地表矿体原生露头与铁矿转石是直接找矿标志。
关键词 南铁矿 地质特征 找矿标志 和龙
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一种经济实用的养鸡设施
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作者 郝玉照 王东升 杨允亮 《农村实用工程技术(温室园艺)》 1990年第5期14-15,共2页
山西省太谷县家禽研究会种鸡场,是由侯城乡南付井村养鸡专业户孙国仁同志创办的。从1986年建场以来,采用科学的饲养方法,取得了明显的经济效益和社会效益。1988年该场被山西省衣牧厅指定为种鸡生产场。1989年,该场共饲养海赛克斯优种鸡4... 山西省太谷县家禽研究会种鸡场,是由侯城乡南付井村养鸡专业户孙国仁同志创办的。从1986年建场以来,采用科学的饲养方法,取得了明显的经济效益和社会效益。1988年该场被山西省衣牧厅指定为种鸡生产场。1989年,该场共饲养海赛克斯优种鸡4160只,产种蛋80多万枚,供应本省及陕西、河南、河北等省有关地区雏鸡30多万只,年收入10余万元。其所以能取得这样好的经济效益,很重要的一条就是采用了改善鸡舍通风保温条件和鸡床结构的高床平网式养鸡。这种养鸡设施,不仅生产效益好,与普通饲养相比,产蛋率提高5—8%,达89.7%;染病和死亡率降低5%,低于7%;受精率提高10%,达96%。 展开更多
关键词 设施 鸡床
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Framework for assessing quality of care for inflammatory bowel disease in Sweden 被引量:2
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作者 Martin Rejler Jrgen Tholstrup +2 位作者 Mattias Elg Anna Spngéus Boel Andersson Gre 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第10期1085-1092,共8页
AIM: To create and apply a framework for quality assessment and improvement in care for inflammatory bowel disease (IBD) patients. METHODS A framework for quality assessment and improvement was created for IBD based o... AIM: To create and apply a framework for quality assessment and improvement in care for inflammatory bowel disease (IBD) patients. METHODS A framework for quality assessment and improvement was created for IBD based on two generally acknowledged quality models. The model of Donabedian (Df) offers a logistical and productive perspective and the Clinical Value Compass (CVC) model adds a management and service perspective. The framework creates a pedagogical tool to understand the balance between the dimensions of clinical care (CVC) and the components of clinical outcome (Df). The merged models create a framework of the care process dimensions as a whole, reflecting important parts of the IBD care delivery system in a local setting. Clinical and organizational quality measures were adopted from clinical experience and the literature and were integrated into the framework. Data were collected at the yearly check-up for 481 IBD patients during 2008. The application of the quality assessment framework was tested and evaluated in a local clinical IBD care setting in Jnkping County, Sweden. RESULTS: The main outcome was the presentation of how locally-selected clinical quality measures, integrated into two complementary models to develop a frame-work, could be instrumental in assessing the quality of care delivered to patients with IBD. The selected quality measures of the framework noted less anemia in the population than previously reported, provided information about hospitalization rates and the few surgical procedures reported, and noted good access to the clinic. CONCLUSION: The applied local quality framework was feasible and useful for assessing the quality of care delivered to IBD patients in a local setting. 展开更多
关键词 Quality measures Inflammatory bowel disease Value compass Donabedian Quality improvement
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Chronic fatigue is associated with increased disease-related worries and concerns in inflammatory bowel disease 被引量:8
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作者 Lars-Petter Jelsness-Jφrgensen Tomm Bernklev +2 位作者 Magne Henriksen Roald Torp Bjφrn Moum 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第5期445-452,共8页
AIM:To investigate the impact of chronic fatigue on disease-related worries in inflammatory bowel disease (IBD) and the potential multicolinearity between subjective questionnaires.METHODS:Patients in remission or wit... AIM:To investigate the impact of chronic fatigue on disease-related worries in inflammatory bowel disease (IBD) and the potential multicolinearity between subjective questionnaires.METHODS:Patients in remission or with mild-tomoderate disease activity completed the fatigue questionnaire (FQ),the rating form of IBD patient concerns (RFIPC),the Short-Form 36 (SF-36),and IBD questionnaire (N-IBDQ).In addition,clinical and epidemiological data were obtained.RESULTS:In total,140 patients were included;of which 92 were diagnosed with ulcerative colitis and 48 with Crohn's disease.The mean age of patients with chronic fatigue was 44.2 years (SD=15.8) and for non-fatigued patients was 44.7 years (SD=16.0).Chronic fatigued patients had clinically significantly increased levels of disease-related worries,as measured by Cohen's d effect size.Worries about having an ostomy bag,loss of bowel control,and energy levels were most prominent in both chronic fatigued and non-chronic fatigued IBD patients.Variance inflation factor (VIF) and tolerance indicated that there were no problematic multicolinearity among the FQ,RFIPC,SF-36 and N-IBDQ responses (VIF < 5 and tolerance > 2).CONCLUSION:Chronic fatigue is associated with increased levels of disease-related worries and concerns in IBD.Increased levels of worries were also associated with impaired health-related quality of life. 展开更多
关键词 FATIGUE WORRIES Health-related quality oflife Patient reported outcome Inflammatory boweldisease
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Clinical features and epidemiology of spondyloarthritides associated with inflammatory bowel disease 被引量:9
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作者 Carlo Salvarani Walter Fries 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第20期2449-2455,共7页
Inflammation of axial and/or peripheral joints is one of the most frequent extra-intestinal manifestations complicating the clinical course and therapeutic approach in inflammatory bowel diseases(IBD).The frequency of... Inflammation of axial and/or peripheral joints is one of the most frequent extra-intestinal manifestations complicating the clinical course and therapeutic approach in inflammatory bowel diseases(IBD).The frequency of these complications seems to be similar for both diseases, Crohn's disease and ulcerative colitis.Arthritis associated with IBD belongs to the category of spondyloarthropathies.Axial involvement ranges from isolated inflammatory back pain to ankylosing spondylitis, whereas peripheral arthritis is noted in pauciarticular and in polyarticular disease.Asymptomatic radiological involvement of the sacroiliac joints is reported to occur in up to 50% of patients.Other musculoskeletal manifestations such as buttock pain, dactylitis, calcaneal enthesitis, and thoracic pain are frequently underdiagnosed and, consequently, are not treated appropriately.Several diagnostic approaches and criteria have been proposed over the past 40 years in an attempt to correctly classify and diagnose such manifestations.The correct recognition of spondylarthropathies needs an integrated multidisciplinary approach in order to identify common therapeutic strategies, especially in the era of the new biologic therapies. 展开更多
关键词 Crohn disease Ankylosing spondylitis Ulcerative colitis SPONDYLARTHROPATHIES ARTHRITIS ENTHESOPATHY
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Intraductal papillary mucinous neoplasm in chronic calcifying pancreatitis:Egg or hen? 被引量:3
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作者 Evangelos Kalaitzakis Barbara Braden +2 位作者 Palak Trivedi Yalda Sharifi Roger Chapman 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第10期1273-1275,共3页
Intraductal papillary mucinous neoplasm(IPMN)is an increasingly reported entity.Extensive pancreatic calcification is generally thought to be a sign of chronic pancreatitis,but it may occur simultaneously with IPMN le... Intraductal papillary mucinous neoplasm(IPMN)is an increasingly reported entity.Extensive pancreatic calcification is generally thought to be a sign of chronic pancreatitis,but it may occur simultaneously with IPMN leading to diagnostic difficulties.We report a case of a patient initially diagnosed with chronic calcifying pancreatitis who was later shown to have a malignant IPMN.This case illustrates potential pitfalls in the diagnosis of IPMN in the case of extensive pancreatic calcification as well as clues that may lead the clinician to suspecting the diagnosis.The possible mechanisms of the relation between pancreatic calcification and IPMN are also reviewed. 展开更多
关键词 Intraductal papillary mucinous neoplasm Endoscopic ultrasound Calcifying pancreatitis Carcinoembryonic antigen Endoscopic retrogradecholangiopancreatography
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Crucial steps in the natural history of inflammatory bowel disease 被引量:7
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作者 Giovanni Latella Claudio Papi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第29期3790-3799,共10页
Inflammatory bowel diseases(IBD),including ulcerative colitis(UC) and Crohn's disease(CD),are chronic,progressive and disabling disorders.Over the last few decades,new therapeutic approaches have been introduced w... Inflammatory bowel diseases(IBD),including ulcerative colitis(UC) and Crohn's disease(CD),are chronic,progressive and disabling disorders.Over the last few decades,new therapeutic approaches have been introduced which have led not only to a reduction in the mortality rate but also offered the possibility of a favorable modification in the natural history of IBD.The identification of clinical,genetic and serological prognostic factors has permitted a better stratification of the disease,thus allowing the opportunity to indicate the most appropriate therapy.Early treatment with immunosuppressive drugs and biologics has offered the opportunity to change,at least in the short term,the course of the disease by reducing,in a subset of patients with IBD,hospitalization and the need for surgery.In this review,the crucial steps in the natural history of both UC and CD will be discussed,as well as the factors that may change their clinical course.The methodological requirements for high quality studies on the course and prognosis of IBD,the true impact of environmental and dietary factors on the clinical course of IBD,the clinical,serological and genetic predictors of the IBD course(in particular,which of these are rel-evant and appropriate for use in clinical practice),the impact of the various forms of medical treatment on the IBD complication rate,the role of surgery for IBD in the biologic era,the true magnitude of risk of colorectal cancer associated with IBD,as well as the mortality rate related to IBD will be stressed;all topics that are extensively discussed in separate reviews included in this issue of World Journal of Gastroenterology. 展开更多
关键词 Inflammatory bowel disease Ulcerative colitis Crohn's disease Natural history Clinical course Complications Therapy Surgery Mortality
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锐角风暴
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《中学生天地(高中综合版)(B版)》 2018年第1期7-7,共1页
小时候,总有人告诉我,“吞了西瓜籽肚子里就会长出小西瓜”,而我深信不疑地还跑去太阳底下晒,好让它快快长大。长辈们当时“唬人”的话.长大后我们总觉得好笑又温暖。现在,不如来回忆一下,你都天真地信过哪些话,上过哪些当?
关键词 告诉我 锐角 大后 西瓜籽 手指 当时 洗衣服 定积分
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2018年,送你12本书
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《中学生天地(高中综合版)(B版)》 2018年第1期7-7,共1页
我们讨论考试成绩,聊最新的八卦,吐槽最火的电视剧,却很少说起,“我最近读了一本好书,你也可以去看看。”2018年,锐角网请你来参加“12本书”计划,从1月开始,每月月初,我们会在锐角网上推荐一本书,欢迎登陆网站,让我们一起... 我们讨论考试成绩,聊最新的八卦,吐槽最火的电视剧,却很少说起,“我最近读了一本好书,你也可以去看看。”2018年,锐角网请你来参加“12本书”计划,从1月开始,每月月初,我们会在锐角网上推荐一本书,欢迎登陆网站,让我们一起读书,分享彼此被书点亮的瞬间。 展开更多
关键词 告诉我 锐角 大后 西瓜籽 手指 当时 洗衣服 定积分
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为什么人需要仪式感?
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《中学生天地(高中综合版)(B版)》 2018年第1期7-7,共1页
法国童话《小王子》里说,仪式感就是使某一天与其他日子不同。
关键词 告诉我 锐角 大后 西瓜籽 手指 当时 洗衣服 定积分
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