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1Inhibition of the B7-H3 immune checkpoint limits tumor growth by enhancing cytotoxic lymphocyte function显示文摘在肿瘤和免疫系统之间的相互作用仍然糟糕被理解。重要临床的回答在对 CTLA4 和 PD-1/PD-L1 检查点与抗体对待的癌症病人被完成了;然而,仅仅病人的小部分对治疗作出回应,显示需要探索为癌症治疗的另外的 co 禁止的分子。B7-H3, B7 总科的一个成员,被我们以前显示出禁止 T 房间激活和 autoimmunity。在这研究,我们在肿瘤免疫分析了 B7-H3 的功能。B7-H3 的表示在多重肿瘤线,渗入肿瘤的树枝状的房间,和巨噬细胞被发现。与对抗抗体对待到 B7-H3 的 B7-H3-deficient 老鼠或老鼠显示出多重肿瘤的减少的生长,它取决于 NK 和 CD8 + T 房间。与细胞毒素的淋巴细胞表示的通常认为的受体, B7-H3 禁止了他们的激活,并且它的缺乏在忍受肿瘤的鼠标导致了增加的细胞毒素的淋巴细胞功能。B7-H3 和 PD-1 的联合封锁导致了迟了阶段的肿瘤的进一步提高的治疗学的控制。一起拿,我们的结果显示 B7-H3 检查点可以对癌症为免疫疗法用作一个新奇目标。Young-hee Lee Natalia Martin-Orozco Peilin Zheng Jing Li Peng Zhang Haidong Tan Hyun Jung Park Mira Jeong Seon Hee Chang Byung-Seok Kim Wei Xiong Wenjuan Zang Li Guo Yang Liu Zhong-jun Dong Willem W Overwijk Patrick Hwu Qing Yi Larry Kwak Zhiying Yang Tak W Mak Wei-Li Laszlo G Radvanyi Ling Ni Dongfang Liu Chen Dong 2017Cell Research2017,27,8:29
2Robotic surgery for rectal cancer: A systematic review of current practice显示文摘AIM: To give a comprehensive review of current litera-ture on robotic rectal cancer surgery.METHODS: A systematic review of current literature via PubMed and Embase search engines was per-formed to identify relevant articles from january 2007 to november 2013. The keywords used were: 'robotic surgery', 'surgical robotics', 'laparoscopic computer-assisted surgery', 'colectomy' and 'rectal resection'. RESULTS: After the initial screen of 380 articles, 20 pa-pers were selected for review. A total of 1062 patients(male 64.0%) with a mean age of 61.1 years and body mass index of 24.9 kg/m2 were included in the review.Out of 1062 robotic-assisted operations, 831(78.2%) anterior and low anterior resections, 132(12.4%) in-tersphincteric resection with coloanal anastomosis, 98(9.3%) abdominoperineal resections and 1(0.1%) Hart-mann's operation were included in the review. Robotic rectal surgery was associated with longer operative time but with comparable oncological results and anastomotic leak rate when compared with laparoscopic rectal surgery. CONCLUSION: Robotic colorectal surgery has con-tinued to evolve to its current state with promising re-sults; feasible surgical option with low conversion rate and comparable short-term oncological results. The challenges faced with robotic surgery are for more high quality studies to justify its cost.Tony Wing Chung Mak Janet Fung Yee Lee Kaori Futaba Sophie Sok Fei Hon Dennis Kwok Yu Ngo Simon Siu Man Ng 2014World Journal of Gastrointestinal Oncology2014,6,6:16
3Gastrointestinal stromal tumors in a cohort of Chinese patients in Hong Kong显示文摘瞄准:用香港汉语调查流行和胃肠的基质肿瘤(大意) 的临床的模式,并且估计发病率的 CD117 的介绍的影响。方法:从 Yan Chai 医院的病理的部门的数据库, 47 个病人,在这研究与到 2003 年 12 月的从 1995 年 9 月的大意被包括。十大意在 CD117 的介绍前被诊断。临床的特征,肿瘤特征,和治疗被分析。预言肿瘤的因素联系了死亡或复发与比例的危险建模的考克斯一起被学习。结果:病人包括了 26 男性和 21 女性,与 66.6 年的吝啬的年龄(SD 13.1,范围 29-87 年) 。大意的估计的流行每 100,000 个人是 13.4-15.6,与每 100,000 个人的 1.68-1.96 的年度发生。在 CD117 的介绍前后的大意的年度发生每 100,000 个人是 1.1 并且 2.1 每 100,000 个人分别地。胃(34 个病人, 72.3%) 是为肿瘤的最普通的地点,由小肠列在后面(8 个病人, 17.0%) ,食管(2 个病人, 4.3%) ,网膜(2 个病人, 4.3%) 并且冒号(1 个病人, 2.1%) 。31 个病人(66%) 有完全的肿瘤切除术。十一从 16 死亡(23%) 是肿瘤相关的。中部的生存时间是 26 瞬间。五年的幸存率是 61.3% 。与肿瘤相关的死亡或复发联系的重要因素是不完全的切除术,肿瘤尺寸 5 厘米以上,侵略到转移的邻近的机关或存在。结论:在香港的大意的发生在美国比得上那,但是在芬兰比那降低。大意的真发生能在 CD117 的介绍前被低估。不完全的切除术,肿瘤尺寸 5 厘米以上,到转移的邻近的机关或存在的侵略是预言肿瘤相关的死亡或复发的因素。Kam Hoi Chan Chun Wing Chan Wai Hung Chow Wai Keung Kwan Chi Kwan Kong Ka Fung Mak Miu Yi Leung Lin Kiu Lau 2006World Journal of Gastroenterology2006,12,14:12
4Relationship between hepatitis C virus infection and type 2 diabetes mellitus:Meta-analysis显示文摘AIM:To investigate the association between hepatitis C infection and type 2 diabetes mellitus.METHODS:Observational studies assessing the relationship between hepatitis C infection and type 2 diabetes mellitus were identified via electronic and hand searches.Studies published between 1988 to March 2011 were screened,according to the inclusion criteria set for the present analysis.Authors performed separate analyses for the comparisons between hepatitis C virus(HCV) infected and not infected,and HCV infected and hepatitis B virus infected.The included studies were further subgrouped according to the study design.Heterogenity was assessed using I2 statistics.The summary odds ratios with their corresponding 95% CIs were calculated based on a random-effects model.The included studies were subgrouped according to the study design.To assess any factor that could potentially affect the outcome,results were further stratified by age group(proportion of ≥ 40 years),gender(proportion of male gender),body mass index(BMI)(pro-portion of BMI ≥ 27),and family history of diabetes(i.e.,self reported).For stability of results,a sensitivity analysis was conducted including only prospective studies.RESULTS:Combining the electronic database and hand searches,a total of 35 observational studies(in 31 articles) were identified for the final analysis.Based on random-effects model,17 studies(n = 286 084) compared hepatitis C-infected patients with those who were uninfected [summary odds ratio(OR):1.68,95% CI:1.15-2.45].Of these 17 studies,7 were both a cross-sectional design(41.2%) and cohort design(41.2%),while 3 were case-control studies(17.6%).Nineteen studies(n = 51 156) compared hepatitis C-infected participants with hepatitis B-infected(summary OR:1.92,95% CI:1.41-2.62).Of these 19 studies,4(21.1%),6(31.6%) and 9(47.4%) were cross-sectional,cohort and case-control studies,respectively.A sensitivity analysis with 3 prospective studies indicated that hepatitis C-infected patients had a higher risk of developing type 2 diabetes compared with uninfected controls(summary odds ratio:1.41,95% CI:1.17-1.7;I2 = 0%).Among hepatitis C-infected patients,male patients(OR:1.26,95% CI:1.03-1.54) with age over 40 years(summary OR:7.39,95% CI:3.82-9.38) had an increased frequency of type 2 diabetes.Some caution must be taken in the interpretation of these results because there may be unmeasured confounding factors which may introduce bias.CONCLUSION:The findings support the association between hepatitis C infection and type 2 diabetes mellitus.The direction of association remains to be determined,however.Prospective studies with adequate sample sizes are recommended.Cho Naing Joon Wah Mak Syed Imran Ahmed Mala Maung 2012World Journal of Gastroenterology2012,18,14:12
5Analysis of inborn errors of metabolism: disease spectrum for expanded newborn screening in Hong Kong显示文摘氨基酸,器官的酸和丰满的酸氧化的新陈代谢(IEM ) 的古典先天的错误的背景数据大部分正在缺乏香港,在集体基于 spectrometry 的扩展新生儿为 IEM 屏蔽没被开始的地方。瞄准在香港评估近似发生,光谱和古典 IEM 的另外的特征的当前的学习,将在开发为实验室血浆氨基酸记录的本地 area.Methods 屏蔽节目的一个扩展新生儿重要,血浆 acylcarnitines 和尿从年 2005~2009 的器官的酸分析在为 IEM 提供生物化学、基因的诊断服务的三个地区性的化学病理实验室包括回顾地 reviewed.Resu 在香港的古典 IEM 的发生粗略地被估计每 1000live 出生每 4122 生活出生,或 0.243 个盒子是至少 1 个盒子。这发生类似于全球报导的那些,包括中国的大陆。hyperphenylalaninemia 的估计的发生在 29 542 实时 births.Conclusions 是 1 我们的数据显示它为在香港的扩展新生的屏蔽节目的介绍是无可争辩的。因为香港是一个大城市的城市,一个全面扩展新生的屏蔽程序和工作分派系统应该是可得到的服务在区域出生的出生不满一月的婴儿。Han-Chih Hencher Lee Chloe Miu Mak Ching-Wan Lam Yuet-Ping Yuen, Angel On-Kei Chan Chi-Chung Shek Tak-Shing Siu Chi-Kong Lai Chor-Kwan Ching Wai-Kwan Siu Sammy Pak-Lam Chen Chun-Yiu Law Morris Hok-Leung Tai Sidney Tam Albert Yan-Wo Chan 2011Chinese Medical Journal2011,,7:12
6PKM2: A gatekeeper between growth and survival显示文摘Isaac Harris Susan McCracken Tak Wah Mak 2012Cell Research2012,22,3:11
7赤红壤早稻田甲烷排放通量及其影响因素显示文摘用封闭箱法对广东省赤红壤早稻田CH4排放通量进行了观测。结果表明,CH4排放有明显的季节变化规律,3个排放高峰分别出现在水稻分蘖末期、孕穗抽穗期和乳熟期,平均通量为5.7mg.m-2.h-1。在测定期内,CH4排放与5和10cm土壤温度呈显著正相关,与土壤Eh呈显著负相关,与土壤pH值、水层深浅相关不明显。杜尧东 刘锦銮 杨宁 王天龙 MAK Khalil MJ Shearer 2005生态学杂志2005,24,8:10
8汉语第三人称回指语形式眼动阅读实验显示文摘回指是篇章连贯的主要手段之一,受多种因素影响。前人文献较少关注回指语形式对回指的影响,而这正是汉语篇章的特色之一。本文运用眼动实验的范式考察汉语母语者阅读理解第三人称回指语形式(第三人称代词或零形式)的差异,包括认知加工时间的长短以及是否影响回指对象的判定,并对比相关语言学研究,旨在揭示汉语母语者理解篇章回指的机制。实验发现:1)汉语母语者阅读话题接续的篇章时,零形式快于代词;而阅读话题转换的篇章时,代词快于零形式。可见母语者对篇章连贯性和回指语形式之间的对应关系非常敏感,篇章连贯性和回指语形式之间有相互作用。2)不管是零形式还是代词,母语者都倾向认为其回指主语,即回指语形式不影响回指对象的判定,但读者会根据篇章的展开理解并修正对回指的判断,证明篇章回指的理解是一个动态的调整过程。李榕 Pim MAK Ted SANDERS 2016中国语文2016,,1:10
9Gadoxetic acid-enhanced magnetic resonance imaging can predict the pathologic stage of solitary hepatocellular carcinoma显示文摘BACKGROUND Although important for determining long-term outcome, pathologic stage of hepatocellular carcinoma (HCC) is difficult to predict before surgery. Current state-of-the-art magnetic resonance imaging (MRI) using gadoxetic acid provides many imaging features that could potentially be used to classify single HCC as pT1 or pT2. AIM To determine which gadoxetic acid-enhanced MRI (EOB-MRI) findings predict pathologic stage T2 in patients with solitary HCC (cT1). METHODS Pre-operative EOB-MRI findings were reviewed in a retrospective cohort of patients with solitary HCC. The following imaging features were examined: Hyperintensity in unenhanced T2-weighted images, hypointensity in unenhanced T1-weighted images, arterial enhancement, corona enhancement, washout appearance, capsular appearance, hypointensity in the tumor tissue during the hepatobiliary (HB) phase, peritumoral hypointensity in the HB phase, hypointense rim in the HB phase, intratumoral fat, hyperintensity on diffusionweighted imaging, hypointensity on apparent diffusion coefficient map, mosaic appearance, nodule-in-nodule appearance, and the margin (smooth or irregular). Surgical pathology was used as the reference method for tumor staging. Univariate and multivariate analyses were performed to identify predictors of microvascular invasion or satellite nodules. RESULTS There were 39 (34.2%;39 of 114) and 75 (65.8%;75 of 114) pathological stage T2 and T1 HCCs, respectively. Large tumor size (≥ 2.3 cm) and two MRI findings, i.e., corona enhancement [odds ratio = 2.67;95% confidence interval: 1.101-6.480] and peritumoral hypointensity in HB phase images (odds ratio = 2.203;95% confidence interval: 0.961-5.049) were associated with high risk of pT2 HCC. The positive likelihood ratio was 6.25 (95% confidence interval: 1.788-21.845), and sensitivity of EOB-MRI for detecting pT2 HCC was 86.2% when two or three of these MRI features were present. Small tumor size and hypointense rim in the HB phase were regarded as benign features. Small HCCs with hypointense rim but not associated with aggressive features were mostly pT1 lesions (specificity, 100%). CONCLUSION Imaging features on EOB-MRI could potentially be used to predict the pathologic stage of solitary HCC (cT1) as pT1 or pT2.Yi-Chen Chou I-Ha Lao Pei-Ling Hsieh Ying-Ying Su Chee-Wai Mak Ding-Ping Sun Ming-Jen Sheu Hsing-Tao Kuo Tzu-Ju Chen Chung-Han Ho Yu-Ting Kuo 2019World Journal of Gastroenterology2019,25,21:10
10血清HBV RNA和HBsAg水平在判断亚洲慢性乙型肝炎患者是否适合停用恩替卡韦中的作用显示文摘【据Gut 2020年8月报道】题:血清HBV RNA和HBsAg水平在判断亚洲慢性乙型肝炎患者是否适合停用恩替卡韦中的作用(作者Seto WK等)来自中国香港的Seto等研究显示,在HBsAg血清清除前,慢性HBV感染的某些亚群患者可能已经停止治疗了。血清HBV RNA在决定停止治疗适宜性方面的作用中尚未得到很好的研究。SETO WK LIU KS MAK LY 徐晓桐 金晶兰 2020临床肝胆病杂志2020,36,11:7
11Molecular basis of von Hippel-Lindau syndrome in Chinese patients显示文摘背景 Von Hippel-Lindau ( VHL )症候群是预先安排的正染色体的主导的家庭癌症症候群影响个人到在用南部的汉语的 VHL 的基因基础大部分是的各种各样的 organs.The 的多重瘤 unknown.In 这研究,我们在九无关的南部的中国 families.Methods 描绘了 VHL 的变化光谱有 VHL 的临床的特征的九 probands ,二征兆并且八个无征状的家庭成员在这 study.PrenatalSIU Wai-kwan MA Ronald Ching-wan LAM Ching-wan MAK Chloe Miu YUEN Yuet-ping LO Fai-man Ivan CHAN Kin-wan LAM Siu-fung LING Siu-cheung TONG Sui-fan SO Wing-yee CHOW Chun-chung TANG Mary Hoi-yin TAM wing-hung CHAN Albert Yan-wo 2011Chinese Medical Journal2011,,2:6
12Epidemiology and natural history of Wilson's disease in the Chinese: A territory-based study in Hong Kong between 2000 and 2016显示文摘AIM To investigate the epidemiology and natural history of Wilson's disease in the Chinese.METHODS Data were retrieved via electronic search of hospital medical registry of the Hong Kong Hospital Authority,which covers all the public healthcare services. We identified cases of Wilson's disease between 2000 and 2016 by the International Classification of Diseases(ICD)-9 code. We analyzed the incidence rate,prevalence and adverse outcomes of Wilson's disease.RESULTS We identified 211 patients(male cases 104; female cases 107; median age 27.2 years,IQR: 17.1-38.6 years; duration of follow-up 8.0 years,IQR: 5.0-14.0 years). The average annual incidence rate was 1.44 per million person-years while the prevalence was 17.93 per million. Between 2000 and 2016,there was a decrease in the annual incidence rate from 1.65 to 1.23 per million person-years(P = 0.010),whereas there was an increase in the annual prevalence from 7.80 to 25.20 per million(P < 0.001). Among the 176 cases with hepatic involvement,38(21.6%) had cirrhosis,three(1.7%) developed hepatocellular carcinoma,24(13.6%) underwent liver transplantations,and 26(14.8%) died. Seven patients had concomitant chronic viral hepatitis B or C. The 5-year and 10-years rates of overall survival were 92.6% and 89.5%,and for transplant-free survival rates 91.8% and 87.4%,respectively. Cirrhosis and possibly chronic viral hepatitis were associated with poorer overall survival. CONCLUSION There was a significant increase in the prevalence of Wilson's disease in Hong Kong. The prognosis was favorable except for those with cirrhosis or concomitant viral hepatitis.Ka-Shing Cheung Wai-Kay Seto James Fung Lung-Yi Mak Ching-Lung Lai Man-Fung Yuen 2017World Journal of Gastroenterology2017,23,43:6
13Quality of life after laparoscopic vs open sphincter-preserving resection for rectal cancer显示文摘AIM: To compare quality of life (QoL) outcomes in Chinese patients after curative laparoscopic vs open surgery for rectal cancer. METHODS: Eligible Chinese patients with rectal cancer undergoing curative laparoscopic or open sphincterpreserving resection between July 2006 and July 2008 were enrolled in this prospective study. The QoL outcomes were assessed longitudinally using the validated Chinese versions of the European Organization for Research and Treatment of Cancer QLQ-C30 and QLQCR38 questionnaires before surgery and at 4, 8, and 12 mo after surgery. The QoL scores at the different time points were compared between the laparoscopic and open groups. A higher score on a functional scale indicated better functioning, whereas a higher score on a symptom scale indicated a higher degree of symptoms.RESULTS: Seventy-four patients (49 laparoscopic and 25 open) were enrolled. The two groups of patients were comparable in terms of sociodemographic data, types of surgery, tumor staging, and baseline mean QoL scores. There was no significant decrease from baseline in global QoL for the laparoscopic group at different time points, whereas the global QoL was worse compared to baseline beginning at 4 mo but returned to baseline by 12 mo for the open group (P = 0.019, Friedman test). Compared to the open group, the laparoscopic group had significantly better physical (89.9±1.4 vs 79.2±3.7, P = 0.016), role (85.0±3.4 vs 63.3±6.9, P = 0.005), and cognitive (73.5±3.4 vs 50.7±6.2, P = 0.002) functioning at 8 mo, fewer micturition problems at 4-8 mo (4 mo: 32.3±4.7 vs 54.7±7.1, P = 0.011; 8 mo: 22.8±4.0 vs 40.7±6.9, P = 0.020), and fewer male sexual problems from 8 mo onward (20.0±8.5 vs 76.7±14.5, P = 0.013). At 12 mo after surgery, no significant differences were observed in any functional or symptom scale between the two groups, with the exception of male sexual problems, which remained worse in the open group (29.2±11.3 vs 80.0±9.7, P = 0.026). CONCLUSION: Laparoscopic sphincter-preserving resection for rectal cancer is associated with better preservation of QoL and fewer male sexual problems when compared with open surgery in Chinese patients. These findings, however, should be interpreted with caution because of the small sample size of the study.Simon Siu-Man Ng Wing-Wa Leung Cherry Yee-Ni Wong Sophie Sok-Fei Hon Tony Wing-Chung Mak Dennis KwokYu Ngo Janet Fung-Yee Lee 2013World Journal of Gastroenterology2013,19,29:6
14Modulatory Effects and Action Mechanisms of Tryptanthrin on Murine Myeloid Leukemia Cells显示文摘白血病是造血的房间开发的混乱并且被一房间增长和区别解开描绘。当常规处理经常有严重不利副作用,对为白血病治疗的新奇战术的发展有紧迫的需要。Tryptanthrin (6,12-dihydro-6,12-dioxoindolo-(2,1-b )-quinazoline) 是从药用的靛青植物(Ban-Lan-Gen ) 的弄干的根孤立的自然地发生的、弱基本的碱。有被报导了各种各样生物并且药理学活动包括抗菌剂,反煽动性, immunomodulatory 和反肿瘤效果。然而,它房间糟糕仍然是的 myeloid 上的调节效果和行动机制理解。在这研究, tryptanthrin 被显示在一个剂量依赖者和时间依赖者举止压制鼠科的 myeloid 白血病 WEHI-3B JCS 房间的增长。它显著地也在 syngeneic BALB/c 老鼠在 vivo 减少了 WEHI-3B JCS 房间的生长。然而,它没在正常的鼠科的腹巨噬细胞上展出重要直接 cytotoxicity。流动 cytometric 分析在 G0/G1 阶段显示出对待 tryptanthrin 的 WEHI-3B JCS 房间的明显的房间周期拘捕。cyclin D2 的表示, D3, Cdk 2,在 WEHI-3B JCS 房间的 4 和 6 基因被发现在由 RT-PCR 测量了的 24 h 下面调整。词法、功能的研究表明 tryptanthrin 能在 WEHI-3B JCS 房间导致区别,由 vacuolation 的增加出现在对待 tryptanthrin 的房间的细胞的颗粒度和减少 NBT 活动。一起,我们的调查结果建议 tryptanthrin 可能由引起房间周期拘捕并且由触发房间区别在鼠科的 myelomonocytic 白血病 WEHI-3B JCS 房间上施加它的反肿瘤效果。Hoi-Ling Chan Hon-Yan Yip Nai-Ki Mak Kwok-Nam Leung 2009Cellular & Molecular Immunology2009,6,5:6
15Clinical features and treatment outcomes of endogenous Klebsiella endophthalmitis:a 12-year review显示文摘AIM:To identify the clinical features and treatment outcomes of endogenous Klebsiella pneumoniae endophthalmitis and investigate prognostic factors of poor visual outcome.METHODS:The clinical records of all patients diagnosed with endogenous Klebsiella endophthalmitis between January 2007 to December 2018 in Prince of Wales Hospital,Hong Kong,China were retrospectively reviewed.Thorough ophthalmological examination findings were recorded in the case note,including visual acuity testing,slit-lamp examination,indirect ophthalmoscopy and B-scan ultrasonography if media opacity precluded fundus viewing.RESULTS:A total of 18 eyes in 14 patients were identified.Bilateral involvement was noted in 4 patients(28.6%).Hepatobiliary sepsis was the source in 9 patients(64.3%).Culture of intraocular fluid was positive in 5 out of 18 eyes(27.8%).Mortality was noted in 2 patients(14.3%).Mean final visual acuity was 20/1500.Six out of 16 eyes had total loss of sight(37.5%)and 3 eyes required evisceration(18.8%).Multivariate linear regression revealed poor presenting visual acuity(P=0.031)and lack of fundus view due to vitritis(P=0.02)as prognostic factors of poor visual outcome.CONCLUSION:Visual outcome of endogenous Klebsiella endophthalmitis is poor.Poor presenting visual acuity and lack of fundus view predict poor visual outcome.High index of suspicion for endophthalmitis is important in Klebsiella sepsis patients with complaints of ocular symptoms.Ophthalmological screening is recommended in noncommunicable patients with Klebsiella sepsis.Chun Yue Mak Mary Ho Lawrence Pui-leung Iu Helena Pui-yee Sin Li Jia Chen Grace Lui Marten Erik Brelen Alvin Lerrmann Young 2020International Journal of Ophthalmology(English edition)2020,13,12:5
163T MR灌注参数(K^(trans))和扩散参数(ADC)在不同脑肿瘤的相关关系的初步研究显示文摘目的评估MR灌注参数(K^(trans))和扩散参数(ADC)在不同脑肿瘤的相关关系。方法回顾性研究13例脑肿瘤(男8例女5例平均年龄54.6±17.7岁,其中胶质母细胞瘤3例,低级别-间变性胶质瘤4例,脑膜瘤3例,转移瘤3例。所有患者均行T_1WI动态对比增强MR灌注和扩散成像(Magnetom Trio,A Tim System 3.0 T,Siemens)。对每个病例,在相应的K^(trans)和ADC图上选取兴趣区。记录所有兴趣区的K^(trans)和ADC的最大值(max),平均值(mean),最小值(min),并进行Pearson相关分析。结果 K^(trans)(max)与ADC(min)及ADC(mean)呈明显负相关,Pearson相关系数分别为(r=-0.536,P<0.001)(r=-0.465,P<0.001)。K^(trans)(mean)与ADC(mean)呈明显负相关(r=-0.228,P=0.038)。K^(trans)(min)亦与ADC(max)呈明显负相关(r=-0.355,P<0.001)。结论不论脑肿瘤的类型,ADC值与K^(trans)值始终呈负相关,这些发现说明微血管渗透性、肿瘤微环境等因素,可能调节和/或影响肿瘤细胞数量、缺血性损伤及复杂的细胞外环境变化。初建平 关键 Henry Ka-Fung Mak 杨智云 罗柏宁 杨建勇 2012影像诊断与介入放射学2012,21,4:5
17RFID轻量型中间件的构成与实现显示文摘为满足国内中小企业的实际管理需求,设计一种射频识别(RFID)轻量型中间件,其架构介于以基础架构为中心与以应用程序为中心的中间件之间,简化了电子产品代码(EPC)系统的应用层事件结构。以应用程序接口为基础,借鉴数据库集成过滤思想实现的轻量型中间件,具有结构简单、开发周期短、易于后期维护和扩展的特点。林凤群 陈伯成 袁博 刘文煌 李晓燕 MAK Andy 王洪洋 2010计算机工程2010,36,17:4
18Prediction of hepatocellular carcinoma development by aminotransferase to platelet ratio index in primary biliary cholangitis显示文摘AIM To investigate the usefulness of aspartate aminotransferase to platelet ratio index(APRI) in predicting hepatocellular carcinoma(HCC) risk in primary biliary cholangitis(PBC).METHODS We identified PBC patients between 2000 and 2015 by searching the electronic medical database of a tertiary center. The hazard ratio(HR) of HCC with different risk factors was determined by Cox proportional hazards model. RESULTS One hundred and forty-four PBC patients were recru-ited. Patients were diagnosed at a median age of 57.8 years [interquartile range(IQR): 48.7-71.5 years), and 41(28.5%) patients had cirrhosis at baseline. The median follow-up duration was 6.9 years(range: 1.0-26.3 years). Twelve patients developed HCC, with an incidence rate of 10.6 cases per 1000 patient-years. The overall 5-, 10-and 15-year cumulative incidences of HCC were 2.3% 95%CI: 0%-4.8%), 8.4%(95%CI: 1.8%-14.5%) and 21.6%(6.8%-34.1%), respectively. Older age(HR = 1.07), cirrhosis(HR = 4.38) and APRI at 1 year after treatment(APRI-r1) > 0.54(HR = 3.94) were independent factors for HCC development. APRI-r1, when combined with treatment response, further stratified HCC risk(log rank P < 0.05). The area under receiver operating curve of APRI-r1 in predicting HCC was 0.77(95%CI: 0.64-0.88).CONCLUSION APRI-r1 can be used to predict the development of HCC in PBC patients. Combination of APRI-r1 with treatment response can further stratify the HCC risk.Ka-Shing Cheung Wai-Kay Seto James Fung Lung-Yi Mak Ching-Lung Lai Man-Fung Yuen 2017World Journal of Gastroenterology2017,23,44:4
19Use of machine learning algorithms to assess the state of rockburst hazard in underground coal mine openings显示文摘The risk of rockbursts is one of the main threats in hard coal mines. Compared to other underground mines, the number of factors contributing to the rockburst at underground coal mines is much greater.Factors such as the coal seam tendency to rockbursts, the thickness of the coal seam, and the stress level in the seam have to be considered, but also the entire coal seam-surrounding rock system has to be evaluated when trying to predict the rockbursts. However, in hard coal mines, there are stroke or stress-stroke rockbursts in which the fracture of a thick layer of sandstone plays an essential role in predicting rockbursts. The occurrence of rockbursts in coal mines is complex, and their prediction is even more difficult than in other mines. In recent years, the interest in machine learning algorithms for solving complex nonlinear problems has increased, which also applies to geosciences. This study attempts to use machine learning algorithms, i.e. neural network, decision tree, random forest, gradient boosting, and extreme gradient boosting(XGB), to assess the rockburst hazard of an active hard coal mine in the Upper Silesian Coal Basin. The rock mass bursting tendency index WTGthat describes the tendency of the seam-surrounding rock system to rockbursts and the anomaly of the vertical stress component were applied for this purpose. Especially, the decision tree and neural network models were proved to be effective in correctly distinguishing rockbursts from tremors, after which the excavation was not damaged. On average, these models correctly classified about 80% of the rockbursts in the testing datasets.Lukasz Wojtecki Sebastian Iwaszenko Derek B.Apel Mirosawa Bukowska Janusz Makówka 2022Journal of Rock Mechanics and Geotechnical Engineering2022,14,3:4
20铌酸锶钡薄膜的微结构与电光性能的研究显示文摘本文叙述了使用溶胶凝胶法在MgO(0 0 1)的衬底上制备铌酸锶钡薄膜的过程 ,膜层厚度可达 5 μm。通过X射线衍射、摇摆曲线、扫描、拉曼散射光谱等方法研究了薄膜的微结构性能 ,实验发现 ,铌酸锶钡薄膜具有了较好的 (0 0 1)方向的优先取向性能 ,并且随着薄膜厚度的增加 ,其晶体取向性也会随之不断改进。熔石英的透明衬底上生长的SBN薄膜具有较大的电致双折射效应 ,其有效电光系数能够高达 6 6 2× 10 -11m/V。叶辉 Melanie M T Ho Mak C L 2002光学学报2002,22,10:4
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