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Comparison of Aerosol Single Scattering Albedo Derived from the Ozone Monitoring Instrument with Aerosol Robotic Network Observations

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Atmospheric and Oceanic Science Letters 2012年第3期5卷 264-269页

作者： liu Qi HONG yu-lan School of Earth and Space Sciences University of Seience and Technology of China Hefei 230026 China

The single-scattering albedo （SSA）, which quantifies radiative absorption capability, is an important optical property of aerosols. Ground-based methods have been extensively exploited to determine aerosol SSA but there were no satellite-based SSA measurements available until the advent of advanced remote sensing techniques, such as the Ozone Monitoring Instrument （OMI）. Although the overall accuracy of OMI SSA is estimated to approach 0.1, its regional availability is unclear. Four-year SSA daily measurements from three Aerosol Robotic Network （AERONET） sites in China （Xianghe, Taihu, and Hong Kong） are chosen to determine the accuracy of OMI SSA in specific locations. The results show that on a global scale, the OMI SSA is systematically higher （with a mean relative bias of 3.5% and a RMS difference of ~0.06） and has poor correlation with the AERONET observations. In the Xianghe, Taihu, and Hong Kong sites, the correlation coefficients are 0.16, 0.47, and 0.44, respectively, suggesting that the distinct qualities of OMI SSA depend on geographic locations and/or dominant aerosol environments. The two types of SSA data yield the best agreement in Taihu and the worst in Hong Kong; the differing behavior is likely caused by varying levels of cloud contamination. The good consistency of the aerosol variation between the two SSA datasets on a seasonal scale is promising. These findings suggest that the current-version OMI SSA product can be applied to qualitatively characterize climatological variations of aerosol properties despite its limited accuracy as an instantaneous measurement.

关键词： aerosol single scatter albedo OMI AERONET

Zeroes of the Bergman Kernels on Some New Hartogs Domains

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Chinese Quarterly Journal of Mathematics 2011年第3期26卷 325-334页

作者： WANG An ,liu yu-lan School of Mathematical Sciences Capital Normal University Beijing 100048 China

We obtain the Bergman kernel for a new type of Hartogs *** corresponding LU Qi-Keng's problem is considered.

关键词： grouping circular domain Bergman kernel function LU Qi-Keng domain

Colonoscopy in the diagnosis of intestinal graft versus host disease and cytomegalovirus enteritis following allogeneic haematopoietic stem cell transplantation

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Chinese Medical Journal 2008年第14期121卷 1285-1289页

作者： HE Jin-de liu yu-lan WANG Zhi-feng liu Dai-hong CHEN Huan CHEN yu-hong Department of Gastroenterology People's Hospital Peking University Beijing 100044 China Department of Haematology People's Hospital Peking University Beijing 100044 China

Background Gastrointestinal graft versus host disease （GI-GVHD） and cytomegalovirus （CMV） enteritis are important complications following allogeneic haematopoietic stem cell transplantation （allo-HSCT）. We explored the role of colonoscopy in the diagnosis of GI-GVHD and CMV enteritis following alIo-HSCT to identify the endoscopic manifestations of GI-GVHD and CMV enteritis was made. Methods A retrospective analysis of the colonoscopic manifestations of GI-GVHD, CMV enteritis and GI-GVHD with concurrent CMV enteritis （GconC） and their related clinical issues. Results Forty-seven patients underwent 50 colonoscopies with diagnoses of 32 GI-GVHD, 7 CMV enteritis and 11 GconC. Both GI-GVHD and CMV enteritis had colonic mucosal lesions with various manifestations under colonoscopy. Tortoise shell like changes of the mucosa （12 of 32） and deep ulcers （2 of 7） were specific endoscopic manifestations for GI-GVHD and CMV enteritis, respectively, while mucosal oedema, erythema, congestion, erosion and shallow ulcers could not be used to differentiate GI-GVHD from CMV enteritis. GconC patients were prone to have oozing bleeding of the end ileal mucosa and typhlodicliditis. Of the biopsed specimens for GI-GVHD, CMV enteritis and GconC, 64%, 70% and 44% were taken from the rectum and sigmoid colon respectively. Conclusions Following allo-HSCT, tortoise shell like changes and deep ulcers of the colonic mucosa are characteristic changes for GI-GVHD and CMV enteritis, respectively, while the other lesions are not. Most of the GI-GVHDs and CMV enteritis cases can be diagnosed by left colon examination and tissue biopsy, but total colon examination to the terminal ileum is preferred.

关键词： graft versus host disease cytomegalovirus enteritis stem cell transplantation colonoscopy

Study of Clinical and Genetic Risk Factors for Aspirin-inducec Gastric Mucosal Injury

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Chinese Medical Journal 2016年第2期129卷 174-180页

作者： yun Wu Ying Hu yu-Jing Chi Jian-Hua Zhou yuan-yuan Zhang yu-lan liu Department of Gastroenterology Peking University People's Hospital Beijing 100044 China Central Laboratory Peking University Peopie's Hospital Beijing 100044 China

Background： Current knowledge about clinical and genetic risk factors for aspirin-induced gastric mucosal injury is not sufficient to prevent these gastric mucosal lesions. Methods： We recruited aspirin takers as the exposed group and healthy volunteers as the control group. The exposed group was categorized into two subgroups such as subgroup A as gastric mucosal injury diagnosed by gastroscopy, including erosion, ulcer or bleeding of the esophagus, stomach, or duodenum; subgroup B as no injury of the gastric mucosa was detected by gastroscopy. Clinical information was collected, and 53 single nucleotide polymorphisms were evaluated. Results： Among 385 participants, 234 were in the aspirin-exposed group. According to gastroscopy, 82 belonged to subgroup A, 91 belonged to subgroup B, and gastroscopic results of 61 participants were not available. Using the Chi-square test and logistic regression, we found that peptic ulcer history （odds ratio [OR] = 5.924, 95% confidence intervals [C/]： 2.115-16.592）, dual anti-platelet medication （OR = 3.443, 95% CI： 1.154-10.271 ）, current Helicobacterpylori infection （OR = 2.242, 95% CI： 1.032-4.870）, male gender （OR = 2.211, 95% CI： 1.027-4.760）, GG genotype ofrs2243086 （OR = 4.516, 95% CI： I. 180-17.278）, and AA genotype ofrs 1330344 （OR = 2.178, 95% CI： 1.016-4.669） were more frequent in subgroup A than subgroup B. In aspirin users who suffered from upper gastrointestinal bleeding, the frequency of the TT genotype ofrs2238631 and TT genotype ofrs2243100 was higher than in those without upper gastrointestinal bleeding. Conclusions： Peptic ulcer history, dual anti-platelet medication, tt. pylori current infection, and male gender were possible clinical risk factors for aspirin-induced gastric mucosal injury. GG genotype of rs2243086 and AA genotype of rs 1330344 were possible genetic risk factors. TT genotype ofrs2238631 and TT genotype ofrs2243100 may be risk factors for upper gastrointestinal bleeding in aspirin users.

关键词： Aspirin Gastric Mucosal Injury Risk Factors Single Nucleotide Polymorphisms

Effects of vibration therapy on bone mineral density in postmenopausal women with osteoporosis

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Chinese Medical Journal 2008年第13期121卷 1155-1158页

作者： RUAN Xiang-yan JIN Feng-yu liu yu-lan PENG Zhou-li SUN yun-gao Beijing Obstetrics and Gynecology Hospital Capital Medical University Beijing 100026 China

Background Jaw osteonecrosis possibly associated with the administration of bisphosphonates is expected to be treated with a non-pharmacologic approach. This study aimed to determine whether noninvasive, mechanically mediated vibration would inhibit the decline in bone mineral density （BMD） that follows menopause, enhance the BMD of the lumbar and femoral neck, and reduce chronic back pain in postmenopausal women with osteoporosis. Methods A total of 116 postmenopausal women with osteoporosis participated in this study, and they were divided into groups A （66 patients） and B （50）. Group A received vibration treatment （Subjects vertically stand on the vibration platform, with a vibration frequency of 30 Hz, amplitude of 5 mm; they received the treatment five times per week, ten minutes each time and totally for six months）, whereas women of group B served as controls without any treatment. L2-4 BMD, bilateral femoral neck BMD, and body mass index （BMI） were recorded before the treatment or at the third and sixth months of the treatment respectively. After the ending of the treatment, the change of BMD in each group was compared and analyzed. Chronic back pain was evaluated by visual analogue scale （VAS） at baseline and the third and sixth months of the treatment. Results Of the 116 women, 94 including 51 women from group A （（61.23±8.20） years） and 43 women from group B （（63.73±5.45） years）, completed the study. There were no significant differences in baseline characteristics including age, BMI, menopausal years, lumbar BMD, femoral neck BMD, and VAS between the two groups. The lumbar BMD of the 51 women in group A increased by 1.3% （P=0.034） after vibration treatment for 3 months and by 4.3% at the sixth month （P=0.000）. The lumbar BMD in group B was decreased at the third month, but there was not statistical significance （P〉0.05） At the sixth month, it was decreased by 1.9% （P 〈0.05）. The femoral neck BMD of the 51 women in group A was slightly increased after

关键词： postmenopausal women vibration treatment osteoporosis bone mineral density

Relationship among symptoms, mucosal injury, and acid exposure in gastroesophageal reflux disease

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Chinese Medical Journal 2013年第23期126卷 4430-4434页

作者： XU Ding-ting FENG Gui-jian ZHAO Li-li liu yu-lan Department of Gastroenterology Peking University People'sHospital Beijing 100044 China

Background Symptoms,endoscopy,and pH monitoring form the basis of diagnosis of gastroesophageal reflux disease （GERD）.Their relationship was meaningful for primary care physicians,but still *** research aimed to compare questionnaire,endoscopy,and pH monitoring and to analyze their *** Three hundred patients who underwent the Reflux Disease Questionnaire （RDQ）,endoscopy,and esophageal 24-hour pH monitoring from March 2007 to December 2010 in Peking University People＇s Hospital were *** analyzed the characteristics of different investigations and their *** Male （OR for mild reflux esophagitis （RE） =2.433,severe RE =8.386）,body mass index （BMI）（OR for mild RE =1.222,severe RE =1.297）,and hernia （OR for mild RE =6.059,severe RE =17.547）,were found to be the risk factors for RE; age （OR=1.074） was correlated with severe *** consistency of questionnaire,endoscopy,and pH monitoring was poor：RDQ did not agree well with pH monitoring （K=0.061）,nor with endoscopy （K=0.044）; pH monitoring did not agree well with endoscopy （K=0.316）.However,the severity of mucosa injury in RE was associated with pathological acid exposure （PAE）：reflux episodes of ＞5 minutes （P=0.035）,the percentage time pH ＜4 （P=0.017）,and the DeMeester score （P=0.016） increased significantly in patients with severe *** pain had poor relationship with RE or *** Male,age,BMI,and hernia were probably risk factors for ***,endoscopy,and pH monitoring have their own focus and reinforce each other in *** the GERD symptoms,chest pain had negative correlation with RE or PAE.

关键词： gastroesophageal reflux disease Reflux Disease Questionnaire pathological acid exposure reflux esophagitis

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现代化节水灌溉技术在新疆的应用和发展前景

水利水电技术 2006年第1期37卷 40-42页

作者：刘兰育新疆生产建设兵团水利局新疆乌鲁木齐830002

1新疆节水技术推广情况新疆是我国最著名的干旱地区,世界上排名第二的塔克拉玛干大沙漠就在新疆的南疆,北疆还有我国著名的古尔班通古特大沙漠.新疆全年的平均降水量仅有147 mm,而年平均蒸发势确高达2 000 mm左右,属典型的荒漠绿洲,农... 详细信息

1新疆节水技术推广情况新疆是我国最著名的干旱地区,世界上排名第二的塔克拉玛干大沙漠就在新疆的南疆,北疆还有我国著名的古尔班通古特大沙漠.新疆全年的平均降水量仅有147 mm,而年平均蒸发势确高达2 000 mm左右,属典型的荒漠绿洲,农业用水占总用水量的97%,农业生产主要依赖于灌溉,没有灌溉就没有新疆的农业.新疆还是我国最主要的商品棉生产基地和石油化工基地,随着西部大开发战略的实施、经济的发展、人口的增加,城市用水、工农业用水激增,用水供需矛盾日趋尖锐,给脆弱的生态环境造成极大的威胁.为此,大力发展推广先进的节水灌溉技术已成为新疆实现水资源可持续利用的关键所在.

关键词：节水灌溉喷灌滴灌膜下滴灌新疆

SYNTHESIS OF 16,16-DIMETHYLCARBAPROSTACYCLIN

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Chinese Chemical Letters 1993年第8期4卷 661-662页

作者： Zhi yu liu Hui lan CHU Shanghai Institute of Organic Chemistry,chinese Academy of Sciences,345 Lingling Lu,Shanghai 200032

The title compound was synthesized by introduction of the lower side chain,which had 16,16-dimethyl groups with Wittig-Horner reaction as a key step,then removal of the protecting group of the 11α hydroxyl made 5E and 5Z isomers separable by flash *** desired 5E isomer was converted into the target molecule by reduction and separation of the 15-epimer.

关键词： SYNTHESIS OF 16,16-DIMETHYLCARBAPROSTACYCLIN Wang

马克思的后形而上学历史概念——从阿尔都塞的诠释视角看

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东北师大学报（哲学社会科学版） 2018年第2期 72-78页

作者：刘宇兰东北师范大学马克思主义学部吉林长春130024

马克思哲学中具有巨大的历史性。不理解历史概念就无法理解马克思,但历史却往往作为自明性概念处于被遮蔽状态之中,以至于人们竟然把马克思的历史唯物主义误读为历史主义。这种历史主义把历史当作最终根据和最后原因来解释世界、社会、... 详细信息

马克思哲学中具有巨大的历史性。不理解历史概念就无法理解马克思,但历史却往往作为自明性概念处于被遮蔽状态之中,以至于人们竟然把马克思的历史唯物主义误读为历史主义。这种历史主义把历史当作最终根据和最后原因来解释世界、社会、人,历史成了新的"实体",丧失了自身的历史性,产生了"历史实体化"理论困境和学科难题。阿尔都塞以现实对象和认识对象的区分为理论平台,通过历史和逻辑的界分,消解同时性和历时性概念,在生产方式社会总体性视野中论证了历史的复杂性异质结构。在后形而上学视域中廓清马克思历史概念的特征和理论原则,对于理解马克思哲学不同于传统哲学的革命性变革,理解马克思哲学的当代生命力具有重大价值。

关键词：历史实体形而上学后形而上学