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Use of the average age ratio method in analyzing age heaping in censuses:The case of China 预览
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作者 Danan Gu Qiushi Feng 《国际人口学期刊》 2019年第1期13-26,共14页
Based on the methods of the average period age ratio and the average cohort age ratio,this study systematically assesses age heaping or digit preference in all population censuses of China.Our study finds that the ove... Based on the methods of the average period age ratio and the average cohort age ratio,this study systematically assesses age heaping or digit preference in all population censuses of China.Our study finds that the overall age heaping was relatively low in the Chinese censuses;however,there was a notable preference for ages ending with zero after age 50 in the first two censuses,despite a weakening trend over time.Our study further shows that age heaping in China’s censuses is likely associated with age-related policies such as those on late marriage and retirement.As shown in the study,the average age ratio method can be an alternative of the Whipple’s Index and be improved if the size of birth cohort was taken into account when the number of births is generally reliable. 展开更多
关键词 Age concentration INDEX Age heaping age RATIO Age reporting AVERAGE age RATIO AVERAGE period age RATIO AVERAGE cohort age RATIO China CENSUS DIGIT preference DIGIT AVOIDANCE Whipple’s INDEX Myer’s blended INDEX
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影响生育力的因素及高龄生育的策略
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作者 孙梅 崔文娟 《山东大学学报:医学版》 CAS 北大核心 2019年第2期23-28,共6页
影响生育力的因素非常复杂,年龄增长是生育力下降最不可抗拒的因素,不良遗传、环境、精神心理、生活方式等因素的联合作用也会加速生育力的损害。随着科技的进步,已有多种生育力评估的指标,建议生育期男女尤其是高龄夫妇及时进行生育评... 影响生育力的因素非常复杂,年龄增长是生育力下降最不可抗拒的因素,不良遗传、环境、精神心理、生活方式等因素的联合作用也会加速生育力的损害。随着科技的进步,已有多种生育力评估的指标,建议生育期男女尤其是高龄夫妇及时进行生育评估、排除妊娠相关风险,正确对待助孕技术、赠卵及助孕年龄上限。 展开更多
关键词 年龄 生育力 影响因素 生育评估 高龄生育 体外助孕
Arsenic variability and groundwater age in three water supply wells in southeast New Hampshire 预览
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作者 Joseph P. Levitt James R. Degnan +1 位作者 Sarah M. Flanagan Bryant C. Jurgens 《地学前缘:英文版》 CAS CSCD 2019年第5期1669-1683,共15页
Three wells in New Hampshire were sampled bimonthly over three years to evaluate the temporal variability of arsenic concentrations and groundwater age.All samples had measurable concentrations of arsenic throughout t... Three wells in New Hampshire were sampled bimonthly over three years to evaluate the temporal variability of arsenic concentrations and groundwater age.All samples had measurable concentrations of arsenic throughout the entire sampling period and concentrations in individual wells had a mean variation of more than 7 μg/L.The time series data from this sampling effort showed that arsenic concentrations ranged from a median of 4 mg/L in a glacial aquifer well (SGW-65) to medians of 19 μg/L and 37 μg/L in wells (SGW-93 and KFW-87) screened in the bedrock aquifer,respectively.These high arsenic concentrations were associated with the consistently high pH (median ≥- 8) and low dissolved oxygen (median <0.1 mg/L) in the bedrock aquifer wells,which is typical of fractured crystalline bedrock aquifers in New Hampshire.Groundwater from the glacial aquifer often has high dissolved oxygen,but in this case was consistently low.The pH also is generally acidic in the glacial aquifer but in this case was slightly alkaline (median =7.5).Also,sorption sites may be more abundant in glacial aquifer deposits than in fractured bedrock which may contribute to lower arsenic concentrations.Mean groundwater ages were less than 50 years old in all three wells and correlated with conservative tracer concentrations,such as chloride;however,mean age was not directly correlated with arsenic concentrations.Arsenic concentrations at KFW-87 did correlate with water levels,in addition,there was a seasonal pattern,which suggests that either the timing of or multiple sampling efforts may be important to define the full range of arsenic concentrations in domestic bedrock wells.Since geochemically reduced conditions and alkaline pHs are common to both bedrock and glacial aquifer wells in this study,groundwater age correlates less strongly with arsenic concentrations than geochemical conditions.There also is evidence of direct hydraulic connection between the glacial and bedrock aquifers,which can influence arsenic concentrations.Correlations bet 展开更多
关键词 ARSENIC VARIABILITY GEOCHEMICAL time series Age tracers GROUNDWATER age MODELING
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基于脉搏波波形特征参量的成年男性血管年龄预测模型 预览
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作者 王琳琳 王磊 +2 位作者 张晓阳 李倩 张文露 《医疗卫生装备》 CAS 2019年第8期7-11,共5页
目的:寻找与心血管疾病相关性高的无创脉搏波波形指标,并建立有效的用于成年男性的心血管健康的预测模型,对可能诱发的心脑血管疾病进行早期预警。方法:采集6个年龄阶段的健康男性的脉搏波,每个年龄段采集50个样本。分别提取每个样本的... 目的:寻找与心血管疾病相关性高的无创脉搏波波形指标,并建立有效的用于成年男性的心血管健康的预测模型,对可能诱发的心脑血管疾病进行早期预警。方法:采集6个年龄阶段的健康男性的脉搏波,每个年龄段采集50个样本。分别提取每个样本的脉搏波波形参数特征,包括流入时间、流出时间、总搏动时间、快速流入时间、流入时间占比和波形系数,分析其在不同年龄段的差异性。并采用逐步回归分析方法建立年龄与脉搏波波形参数之间的关系。结果:流入时间、流入时间占比和快速流入时间会随年龄的变化存在较为明显的差异,且随着年龄的增长,这3个指标呈现稳定上升的趋势。而流出时间、总搏动时间和波形系数对年龄变化不敏感。建立了血管年龄的预测模型:年龄=-29.9168+437.9004×流入时间(R^2=0.9321,P=0.0018),将高血压患者的脉搏波流入时间代入上述模型,计算得到的血管年龄均大于实际年龄,且年龄差均大于5岁。结论:流入时间、快速流入时间和流入时间占比随年龄变化有较明显且稳定的变化趋势,其与血管弹性、顺应性和僵硬度密切相关,可以作为预测心血管疾病的影响因素。 展开更多
关键词 脉搏波 波形参数 年龄 血管年龄 预测模型
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Time series analysis of mantle cycles PartⅡ:The geologic record in zircons,large igneous provinces and mantle lithosphere 预览
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作者 Kent C. Condie Stephen J. Puetz 《地学前缘:英文版》 CAS CSCD 2019年第4期1327-1336,共10页
Igneous and detrital zircons have six major U/Pb isotopic age peaks in common(2700 Ma,1875 Ma.1045 Ma,625 Ma,265 Ma and 90 Ma).For igneous rocks,each age peak is comprised of subpeaks with distinct geographic distribu... Igneous and detrital zircons have six major U/Pb isotopic age peaks in common(2700 Ma,1875 Ma.1045 Ma,625 Ma,265 Ma and 90 Ma).For igneous rocks,each age peak is comprised of subpeaks with distinct geographic distributions and a subpeak age range per age peak≤100 Myr.There are eight major LIP age peaks(found on≥10 crustal provinces)of which only four are in common to major detrital zircon age peaks(2715 Ma,1875 Ma,825 Ma,90 Ma).Of the whole-rock Re depletion ages,58%have correspo nding detrital zircon age peaks and 55%have corresponding LIP age peaks.Ten age pea ks are fou nd in common to igneous zircon,detrital zircon,LIP,and Re depletion age time series(3225 Ma,2875 Ma,2145 Ma,2085 Ma,1985 Ma,1785 Ma,1455 Ma,1175 Ma,825 Ma,and 90 Ma).and these are very robust peaks on a global scale as recorded in both crustal and mantle rocks.About 50%of the age peaks in each of these time series correspond to predicted peaks in a 94-Myr mantle cycle,including four of the ten peaks in common to all four time series(2875 Ma,1785 Ma,825 Ma and 90 Ma).Age peak widths and subpeak ranges per age peak suggest that mantle events responsible for age peaks are<100 Myr and many<50 Myr in duration.Age peak geographic distributions show three populations(≤1000 Ma,2500-1000 Ma,>2500 Ma),with the number of new provinces in which age peaks are represented decreasing with time within each population.The breaks between the populations(at 2.5 Ga and 1 Ga)fall near the onsets of two transitions in Earth history.The First Transition may represent a change from stagnant-lid tectonics into plate tectonics and the Second Transition,the onset of subduction of continental crust.The major factor controlling geographic distribution of age peaks is the changing locations of orogeny.Before~2 Ga,age subpeaks and peaks are housed in orogens within or around the edges of crustal provinces,mostly in accretionary orogens.but beginning at 1.9 Ga,collisional orogens become more important.The coincidence in duration between magmatic flare-ups in Phanerozoic 展开更多
关键词 Isotopic age PEAKS U/Pb zircon AGES Re depletion AGES Large IGNEOUS provinces Age peak correlation MANTLE cycles
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1033例在岗职业健康体检人员单次尿检异常影响因素分析
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作者 陈文芬 陈霄峰 管敏昌 《中国卫生检验杂志》 CAS 2019年第7期875-877,共3页
目的调查1033例在岗职业健康人员单次尿常规异常情况,并分析其影响因素。方法釆用干化学对尿液进行检测,共筛查出146例尿检异常者,对其影响因素进行Logistic回归分析。结果单因素Logistic回归分析显示,尿检异常与性别、高血压、年龄、... 目的调查1033例在岗职业健康人员单次尿常规异常情况,并分析其影响因素。方法釆用干化学对尿液进行检测,共筛查出146例尿检异常者,对其影响因素进行Logistic回归分析。结果单因素Logistic回归分析显示,尿检异常与性别、高血压、年龄、工龄、多种职业危害因素呈相关性。多因素Logistic回归分析显示,女性、高血压、年龄51岁~65岁、工龄11年~20年、多种职业危害因素是主要影响因素。结论肾脏病防治重点人群应该包括女性、高血压、年龄51岁~65岁、工龄11年~20年、多种职业危害因素接触者。 展开更多
关键词 尿常规 女性 高血压 年龄 工龄 多种职业危害因素 LOGISTIC回归分析
单纯后路复位减压植骨融合内固定术治疗不同年龄段腰椎滑脱症疗效比较 预览
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作者 许俊胜 《蚌埠医学院学报》 CAS 2019年第9期1247-1250,共4页
目的:单纯后路复位减压植骨融合内固定术治疗不同年龄段腰椎滑脱症的临床疗效比较。方法:选择腰椎滑脱病例40例,按年龄分为2组,26~55岁为A组,>55~77岁为B组;均行单纯后路复位减压植骨融合内固定术。结果:40例均获随访,时间6~30个月。... 目的:单纯后路复位减压植骨融合内固定术治疗不同年龄段腰椎滑脱症的临床疗效比较。方法:选择腰椎滑脱病例40例,按年龄分为2组,26~55岁为A组,>55~77岁为B组;均行单纯后路复位减压植骨融合内固定术。结果:40例均获随访,时间6~30个月。A组病人滑脱复位率高于B组(P<0.05),手术时间、出血量、术后VAS评分、术后JOP评分、假关节形成率、硬膜囊损伤率、椎间隙感染率和切口血肿率在2组间差异均无统计学意义(P>0.05)。末次随访2组VAS评分与JOP评分差异亦均无统计学意义(P>0.05)。结论:对于年龄≤55岁的病人应争取将滑脱椎体完全复位,>55岁的病人可不予完全复位,但必须保证神经根松弛,无压迫。 展开更多
关键词 腰椎滑脱症 年龄 不完全复位 内固定
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Bar-headed goose into bird and chicks cloaca microbial of contrast analysis 预览
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作者 Xiaotian Zheng 《探索-植物与动物科学》 2019年第1期1-6,共6页
Intestinal Microbial by maintain steady-state, auxiliary digestion and promote immune system development and style maintenance host of health state. Intestinal micro-Biological itself by the host of gene, diet, age an... Intestinal Microbial by maintain steady-state, auxiliary digestion and promote immune system development and style maintenance host of health state. Intestinal micro-Biological itself by the host of gene, diet, age and environment and factors of influence. However intestinal microbial of change and Host Age Between the relationship still have many unknown. This study respectively collection bar-headed goose (Anser indicus)2Only into bird and3Only chicks cloaca Samples, Extraction intestinal microbial totalDNAThe16 S rRNAHigh Flux sequencing of Methods Analysis and compare the two age stage birds intestinal microbial of Flora structure and composition difference. Study found bar-headed goose chicks cloaca microbial belongs9A door content highest of before5A door respectively Is shuttle of door (48.29%), Thick-walled bacteria door (22.21%), Deformation of the door (22.07%), Actinomycetes door (5.02%) And soft wall bacteria door (1.93%). Into bird cloaca microbial belongs17A door most of in turn is the deformation of the door (64.69%), Thick-walled bacteria door (23.92%), Blue bacteria (8.48%), Actinomycetes door (1.43%) And shuttle of door (0.56%). In of the genus level bar-headed goose chicks cloaca microbial belongs18A of made bird containing24A. Into bird cloaca microbialαDiversity was significantly higher than that chicks (P<0.05Welch'sT-Test). 186A operation classification unit (OTU) Belongs to into bird and chicks there are and other640AOTUAnd90AOTUThe respectively belongs to into bird and chicks. Chicks in67.39%OfOtusIs into bird of some. Based onOTUThe clustering results and age group consensus. This results to know birds intestinal microbial and Host age change between the relationship have certain of reference value. 展开更多
关键词 Bar-headed GOOSE cloaca MICROBIAL MICROBIAL group High Flux SEQUENCING age
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拉莫三嗪治疗难治性癫痫的血药浓度影响因素分析
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作者 王晓娟 黄庆 +2 位作者 袁君 张梅 赵伍西 《中国新药杂志》 CAS CSCD 北大核心 2019年第14期1727-1731,共5页
目的:探讨拉莫三嗪(LTG)治疗难治性癫痫时,血药浓度与疗效、剂量、合并用药、年龄之间的关系。方法:收集难治性癫痫患者119例,随机将其分为2组:LTG治疗组、LTG与丙戊酸(valproic acid,VPA)联合治疗组,再将每组按年龄分为18~40岁组、40... 目的:探讨拉莫三嗪(LTG)治疗难治性癫痫时,血药浓度与疗效、剂量、合并用药、年龄之间的关系。方法:收集难治性癫痫患者119例,随机将其分为2组:LTG治疗组、LTG与丙戊酸(valproic acid,VPA)联合治疗组,再将每组按年龄分为18~40岁组、40岁以上组。采用高效液相色谱法(HPLC)测定LTG浓度。结果:LTG联合VPA的疗效较LTG单用更显著,两组间总有效率、血药浓度具有统计学差异(均P <0. 05)。血药浓度与疗效呈正相关,LTG单用治疗组和联合VPA治疗组中不同年龄组间的LTG剂量浓度比无统计学差异(均P> 0. 05)。LTG治疗组的服药剂量与血药浓度呈线性相关(F=3. 436,P=0. 002,r=0. 227);LTG+VPA治疗组服药剂量与血药浓度无相关性(F=1. 803,P=0. 085)。结论:LTG治疗难治性癫痫应综合考虑患者病情、年龄、合并用药、剂量等因素,动态监测血药浓度,及时调整治疗方案,将血药浓度控制在一个有效合理的范围内,达到最佳治疗效果。 展开更多
关键词 拉莫三嗪 血药浓度 癫痫 年龄 合并用药 疗效
年龄和性别对胃镜检查中笑气清醒镇静镇痛效果的影响 预览
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作者 王仁生 岳辉 +6 位作者 徐胜浩 李立夫 黄必钦 陈培生 邓三花 彭芊芊 刘素英 《现代消化及介入诊疗》 2019年第2期137-141,共5页
目的探讨年龄和性别对胃镜检查中笑气清醒镇静镇痛效果的影响。方法选取2017年3月至2018年7月在南方医科大学第三附属医院行笑气清醒镇静镇痛胃镜检查的311例患者为研究对象,按年龄分为青年组、中年组、老年组;按性别分为男性组、女性... 目的探讨年龄和性别对胃镜检查中笑气清醒镇静镇痛效果的影响。方法选取2017年3月至2018年7月在南方医科大学第三附属医院行笑气清醒镇静镇痛胃镜检查的311例患者为研究对象,按年龄分为青年组、中年组、老年组;按性别分为男性组、女性组。收集笑气化浓度及时间、Ramsay镇静分级、VAS疼痛评分、舒适度及不良反应等资料进行对比分析,并通过单因素分析和多因素分析探讨笑气镇静镇痛效果的影响因素。结果与青、中年组相比,老年组的笑气化浓度及时间更小(P <0. 05),其Ramsay镇静分级更高(P <0. 05)、VAS疼痛评分更低(P <0. 05)、舒适度更好(P <0. 05)。与男性组相比,女性组的笑气化浓度及时间更小(P <0. 05),其Ramsay镇静分级更高(P <0. 05)、VAS疼痛评分更低(P <0. 05)、舒适度更好(P <0. 05)。单因素分析显示年龄、性别与笑气镇静镇痛效果有关;多因素分析显示青年、中年及男性均是影响笑气镇静镇痛效果的独立危险因素。结论年龄和性别是胃镜检查中笑气清醒镇静镇痛效果的重要影响因素。老年患者、女性患者更容易达到笑气化状态且笑气镇静镇痛效果更好;与其他患者相比,笑气舒适胃镜技术更受益于老年患者及女性患者。 展开更多
关键词 胃镜检查 笑气镇静镇痛效果 年龄 性别 影响因素
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前列腺特异性抗原4~10μg/L患者前列腺癌检出率及与年龄和病理分级的相关性分析
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作者 余宗泽 韩德军 吴强 《肿瘤预防与治疗》 2019年第6期533-536,共4页
目的:探讨前列腺特异性抗原(prostate specific antigen, PSA) 4~10μg/L患者前列腺癌检出率及与年龄和病理分级的相关性。方法:回顾性收集2011年1月至2017年12月仁寿县人民医院收治的213例PSA 4~10μg/L患者的相关资料,所有患者均行经... 目的:探讨前列腺特异性抗原(prostate specific antigen, PSA) 4~10μg/L患者前列腺癌检出率及与年龄和病理分级的相关性。方法:回顾性收集2011年1月至2017年12月仁寿县人民医院收治的213例PSA 4~10μg/L患者的相关资料,所有患者均行经直肠超声引导下前列腺穿刺活检,计算前列腺癌检出率,比较各年龄组、病理分级与检出率的相关性。结果:本组213例PSA4~10μg/L患者中,穿刺活检阳性患者50例,阳性检出率23.5%。穿刺阳性患者PSA(8.11±0.53)μg/L,穿刺阴性患者PSA(6.55±0.62)μg/L,两组比较差异有统计学意义(t=16.075,P<0.001)。<60岁、60~69岁、70~79岁、≥80岁4个年龄组穿刺活检阳性率分别为:5.88%、17.28%、28.71%、42.86%,随着年龄的增长,前列腺穿刺活检阳性检出率增长明显(χ2趋势=9.046,P=0.003)。Spearman相关分析显示,前列腺穿刺活检阳性检出率与年龄存在正相关关系(r=0.486,P<0.001)。4个年龄组穿刺活检阳性患者Gleason评分≥7分患者分别为:1例(100.0%)、5例(35.7%)、13例(44.8%)和4例(66.7%),组间比较差异无统计学意义(P>0.05);不同肿瘤分期在各年龄组差异无统计学意义(P>0.05)。结论:随着年龄的增加,PSA4~10μg/L患者中,前列腺癌穿刺阳性检出率也相应增高,年龄可以作为PSA4~10μg/L低水平患者前列腺癌筛查和诊断的重要参考指标。 展开更多
关键词 前列腺癌 前列腺特异性抗原 年龄 相关性
不同年龄患者FLACS术中PI操作时瞳孔直径的变化 预览
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作者 喻娟 邓小丽 +5 位作者 黄薇 范丽琪 耿钊 李崇义 孙敏 叶剑 《国际眼科杂志》 CAS 北大核心 2019年第6期968-970,共3页
目的:探讨不同年龄患者飞秒激光辅助白内障手术(FLACS)中瞳孔直径变化的相关因素及其对患者接口(PI)操作时间和手术疗效的影响。方法:选取2017-03/2018-06在我院行FLACS手术的白内障患者101例101眼,按照年龄分为中青年组(46例)和老年组... 目的:探讨不同年龄患者飞秒激光辅助白内障手术(FLACS)中瞳孔直径变化的相关因素及其对患者接口(PI)操作时间和手术疗效的影响。方法:选取2017-03/2018-06在我院行FLACS手术的白内障患者101例101眼,按照年龄分为中青年组(46例)和老年组(55例)。术前常规散瞳,记录PI操作时间、对接时间、劈核半径及PI操作前、中、后的瞳孔直径。术后采用状态焦虑问卷(SAI)评定患者PI操作中的状态焦虑症状,并评估临床疗效。结果:本组患者年龄与PI操作前、中、后瞳孔直径、劈核半径、SAI评分均呈负相关;PI操作时间与SAI评分呈负相关。中青年组患者PI操作前、中、后瞳孔直径(8.89±0.57、7.52±0.52、8.96±0.54mm)均显著大于老年组(8.43±0.73、7.14±0.55、8.44±0.75mm),SAI得分(42.19±9.27分)显著高于老年组(39.80±9.15分)(均P<0.01),但两组患者PI操作时间、对接时间和治疗总有效率均无差异(P>0.05)。结论:FLACS术中中青年患者瞳孔变化较为敏感,且焦虑情绪较为突出,对手术进程有一定影响。 展开更多
关键词 飞秒激光辅助白内障手术 瞳孔直径 年龄
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Fishery biology of whitespotted conger Conger myriaster (Brevoort, 1856) in the Yellow Sea and East China Sea 预览
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作者 Xiuxia Mu Chi Zhang +3 位作者 Ying Xue Chongliang Zhang Binduo Xu Yiping Ren 《海洋学报:英文版》 SCIE CAS CSCD 2019年第6期18-24,共7页
Whitespotted conger Conger myriaster is a commercially important species in the seas around China, Korea and Japan. The coastal waters of China serve as an important feeding ground for congers, but the spatio-temporal... Whitespotted conger Conger myriaster is a commercially important species in the seas around China, Korea and Japan. The coastal waters of China serve as an important feeding ground for congers, but the spatio-temporal variations in the fishery and biological characteristics of the population have been rarely evaluated and less well understood in this area. We studied the growth, spawning and feeding characteristics of C. myriaster on the basis of samples collected from October 2016 to April 2017 in the Yellow Sea and East China Sea. A total of 529 specimens were collected, with ages ranging from 1 to 6 years and total length ranging from 132 mm to 834 mm. The parameters of von Bertalanffy growth equation L∞ and k were 1 026 mm and 0.226 a^–1, respectively;the sex ratio was 88:0 (female: male) in the East China Sea and 2.67:1 in the South Yellow Sea;the development stage of ovary ranged from peri-nucleolus stage to secondary yolk globule stage, and the testis of two males was at midmeiotic stage;Crustacean was the major prey for conger of small length, and food source shift to fish with somatic growth. The results showed substantial differences from previous studies in Japan and Korean waters, as well as from China seas in the 1980s, suggesting potential spatiotemporal changes in the biological characteristics of C. myriaster. This study may improve current understanding of the fishery biology of C. myriaster in the Yellow Sea and East China Sea. 展开更多
关键词 Conger myrisater age and growth GONAD development STOMACH contents YELLOW SEA and EAST China SEA
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某医院男性精液检查结果分析 预览
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作者 丁伟 严乃富 +2 位作者 鹿红梅 周洋 卜承义 《医学信息》 2019年第4期127-128,133共3页
目的通过对我院男性精液检查的分析,了解本地区男性精液质量情况,为男性不育的临床诊疗提供依据。方法采用伟力WLJY-9000型精子分析仪对308例精液进行分析,对异常指标分类统计,并根据年龄进行分组,比较各组精液量,液化时间,p H值,精子... 目的通过对我院男性精液检查的分析,了解本地区男性精液质量情况,为男性不育的临床诊疗提供依据。方法采用伟力WLJY-9000型精子分析仪对308例精液进行分析,对异常指标分类统计,并根据年龄进行分组,比较各组精液量,液化时间,p H值,精子存活率,活力,精子密度,形态和各年龄组间精液量,精子密度,存活率,活力。结果 308例检查结果中,精液完全正常者179例,占58.12%,无精子症者3例,占0.97%,至少一项低于参考值者126例,占40.91%,其中精子活力异常占比最高;精液量方面:≥40岁组的为(2.85±1.13)ml,低于≤29岁组的(3.36±1.17)ml和30~39岁组的(3.41±1.21)ml,差异有统计学意义(P<0.05);精子存活率和活力方面随年龄有下降趋势,差异有统计学意义(P<0.05);精子密度方面,各组间比较,差异无统计学意义(P>0.05)。结论本地区男性精子活力、存活率、精子密度、精液量等指标异常所占比例较高;年龄对精液质量有一定影响,40岁以上人群精液质量下降。 展开更多
关键词 精液检查 精液参数 年龄
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Hydrogeochemical characteristics of hot springs exposed from fault zones in western Guangdong and their 14C age correction 预览
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作者 WANG Hua MAO Xu-mei +4 位作者 WANG Tao FENG Liang LIANG Li-li ZHU Dong-bo YANG Kai-ming 《地下水科学与工程:英文版》 2019年第1期1-14,共14页
Hot springs are natural exposed points of the hydrothermal system. The hydrogeochemistry of hot springs can be used to interpret the formation of the hydrothermal system;and the 14C dating can be used to evaluate the ... Hot springs are natural exposed points of the hydrothermal system. The hydrogeochemistry of hot springs can be used to interpret the formation of the hydrothermal system;and the 14C dating can be used to evaluate the renewability of the hydrothermal system. The hot springs exposed from fault zones in western Guangdong are classified as granite fissure water and clastic rock fissure water, which are sampled and tested. The results of water chemistry analysis show that hot spring water is mainly HCO3-Na type in the beginning, while the mixing of seawater leads to the increase of Cl-. Hydrogen and oxygen isotopes indicate that these hot springs mainly come from atmospheric precipitation, and water-rock interactions produce oxygen isotope exchange reactions, where a significant “oxygen drift” phenomenon can be observed. The relationship between δ^13C and HCO3 - indicates that there is a deep source of CO2 “dead carbon” in hot spring water. This systematic error is not considered in the existing 14C dating correction models. The 14C age of the deep source “dead carbon” correction proposed in this paper is close to the 14C age of the reverse chemical simulation correction, the Gonfiantinie model, and the Mook model. The deep source “dead carbon” correction method can improve the systematic error. Therefore, the 14C age corrected by the deep source “dead carbon” may be more representative in terms of the actual age of geothermal water. 展开更多
关键词 HYDROGEOCHEMISTRY 14C age Deep source “dead carbon” Hot spring WESTERN GUANGDONG
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永久性心房纤颤患者中医体质类型与血浆D-二聚体相关性研究 预览
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作者 谢冰昕 林谦 +3 位作者 马丽华 李勤 李树斌 王恒 《世界中医药》 CAS 2019年第5期1318-1321,共4页
目的:探讨永久性心房纤颤患者中医体质类型与血浆D-二聚体之间的相关性。方法:选取2017年1月至2018年9月广安门医院和广安门医院南区收治的永久性心房纤颤患者150例作为研究对象,进行血浆D-二聚体水平检测,填写《中医体质分类与判定表》... 目的:探讨永久性心房纤颤患者中医体质类型与血浆D-二聚体之间的相关性。方法:选取2017年1月至2018年9月广安门医院和广安门医院南区收治的永久性心房纤颤患者150例作为研究对象,进行血浆D-二聚体水平检测,填写《中医体质分类与判定表》,对数据进行统计分析。结果:永久性心房颤动患者中医体质涵盖所有9种体质类型,其所占比例及血浆D-二聚体水平(%,ng/mL)分别为气虚质(40.6%,292.48±334.58),痰湿质(18.0%,324.74±346.78),血瘀质(10.0%,643.3±1627.23),阳虚质(9.3%,396.64±404.01),阴虚质(8.6%,432.46±664.35),气郁质(6.6%,133.7±79.37),湿热质(3.3%,122.00±21.62),平和质(2.6%,252.00±263.03),特禀质(0.6%,13)。结论:永久性心房纤颤患者中气虚质及痰湿质所占比例较大,血浆D-二聚体水平血瘀质>阴虚质>阳虚质>痰湿质>气虚质>平和质>气郁质>湿热质>特禀质,男女患者血浆D-二聚体水平无明显差别,患者血浆D-二聚体水平不受年龄的影响。 展开更多
关键词 永久性心房纤颤 中医体质 D-二聚体 性别 年龄 血栓栓塞 风险评估 相关性分析
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皮质性及核性白内障影响因素分析 预览
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作者 聂敏 曲超 《实用医院临床杂志》 2019年第4期1-5,共5页
目的探讨白内障的皮质性及核性混浊与年龄、性别、高度近视、糖尿病之间的关联。方法 938只白内障眼,用LOCSⅢ分级标准进行晶体混浊分级,分析白内障的影响因素。结果高度近视眼相对于非高度近视眼的皮质性混浊等级更低,而核性混浊等级更... 目的探讨白内障的皮质性及核性混浊与年龄、性别、高度近视、糖尿病之间的关联。方法 938只白内障眼,用LOCSⅢ分级标准进行晶体混浊分级,分析白内障的影响因素。结果高度近视眼相对于非高度近视眼的皮质性混浊等级更低,而核性混浊等级更高;年龄的增加及患糖尿病者使核性混浊等级更高;男性相对于女性的皮质性混浊及核性混浊等级均更高(P<0. 05)。结论近视防控、控制血糖均可能延缓核性白内障的发展。 展开更多
关键词 核性白内障 皮质性白内障 高度近视 糖尿病 年龄 性别
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Effect of Bushen Hemai decoction on vascular stiffness in elderly patients with isolated systolic hypertension
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作者 Chun-Zhi Yue 《海南医科大学学报(英文版)》 2019年第3期36-39,共4页
Objective: To investigate the effect of Bushen Hemai decoction on the wall stiffness of middle-aged and elderly patients with simple systolic hypertension. Methods: The 126 middle-aged and elderly patients with simple... Objective: To investigate the effect of Bushen Hemai decoction on the wall stiffness of middle-aged and elderly patients with simple systolic hypertension. Methods: The 126 middle-aged and elderly patients with simple systolic hypertension admitted to our hospital from May 2010 to May 2015 were randomly divided into control group (63 cases) and observation group (63 cases). The control group was treated with conventional Western medicine, while the observation group was treated with Bushen Hemai decoction on the basis of the control group. The two groups were treated for 4 weeks. Results: The systolic blood pressure of the two groups decreased after treatment (observation group: T=16.165, control group: T=13.537, P<0.05);the systolic blood pressure of the two groups did not change significantly after treatment (observation group: T=1.857, control group: T=0.483, P>0.05);the systolic blood pressure of the observation group was lower than that of the control group after treatment (T=16.165, P<0.05). After treatment, the level of ST segment of ECG in the two groups was lower than that before treatment (observation group: T=22.145, control group: T=11.007, P<0.05);after treatment, the level of ST segment of ECG in the observation group was lower than that in the control group (T=8.130, P<0.05). After treatment, the pulse conduction velocity of the two groups was lower than that of the control group (observation group:T=8.694, control group: T=3.944, P<0.05);after treatment, the pulse conduction velocity of the observation group was lower than that of the control group (T=5.326, P<0.05). The total effective rate of the observation group (93.65%) was higher than that of the control group (76.19%) (P<0.05). Conclusion: Bushen Hemai Decoction has a significant clinical effect on middle-aged and elderly patients with simple systolic hypertension, and can improve the stiffness of the tube wall, which is worthy of clinical reference. 展开更多
关键词 Bushen Hemai DECOCTION Isolated SYSTOLIC HYPERTENSION in MIDDLE and OLD age Wall STIFFNESS
GIVE ME A GIRL AT AGE EIGHTEEN
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作者 CARLOS OTTERY 《汉语世界:英文版》 2019年第2期86-87,共2页
Writing well about sex has always been a near-impossible task. It is why there are awards for bad sex writing, but not good.
关键词 GIRL AGE EIGHTEEN near-impossible TASK
Diagnostic value of serum cardiac biomarkers for right ventricular dysfunction in non-high-risk patients with acute pulmonary thromboembo-lism
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作者 刘菲菲 《中国医学文摘:内科学分册(英文版)》 2019年第1期35-36,共2页
Objective To investigate the diagnostic value of Nterminal pro-brain natriuretic peptide (NT-proBNP) and troponinⅠ(TnI) for detecting right ventricular dysfunction (RVD) in patients with non-high-risk acute pulmonary... Objective To investigate the diagnostic value of Nterminal pro-brain natriuretic peptide (NT-proBNP) and troponinⅠ(TnI) for detecting right ventricular dysfunction (RVD) in patients with non-high-risk acute pulmonary thromboembolism (APE). Methods A retrospective analysis was performed in 96 adult patients [44 males,52 females,aged (61±14) years] with non-high-risk APE from January 2015 to June 2016. All patients were divided into RVD group and non-RVD group according to whether there was right ventricular enlargement on echocardiography. The baseline data, serumTnl and NT-proBNP levels were compared between the 2 groups and the diagnostic value of the 2 cardiac markers for RVD was analyzed. Results There were no significant differences in age, gender, body mass index between the 2 groups ( P >0. 05 ). 展开更多
关键词 APE RVD age
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