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1A new look at anti-Helicobacter pylori therapy显示文摘With the rising prevalence of antimicrobial resistance,the treatment success of standard triple therapy has recently declined to unacceptable levels (i.e.,80% or less) in most countries.Therefore,several treatment regimens have emerged to cure Helicobacter pylori (H.pylori) infection.Novel first-line anti-H.pylori therapies in 2011 include sequential therapy,concomitant quadruple therapy,hybrid (dual-concomitant) therapy and bismuth-containing quadruple therapy.After the failure of standard triple therapy,a bismuth-containing quadruple therapy comprising a proton pump inhibitor (PPI),bismuth,tetracycline and metronidazole can be employed as rescue treatment.Recently,triple therapy combining a PPI,levofloxacin and amoxicillin has been proposed as an alternative to the standard rescue therapy.This salvage regimen can achieve a higher eradication rate than bismuth-containing quadruple therapy in some regions and has less adverse effects.The best second-line therapy for patients who fail to eradicate H.pylori with first-line therapies containing clarithromycin,amoxicillin and metronidazole is unclear.However,a levofloxacin-based triple therapy is an accepted rescue treatment.Most guidelines suggest that patients requiring third-line therapy should be referred to a medical center and treated according to the antibiotic susceptibility test.Nonetheless,an empirical therapy (such as levofloxacin-based or furazolidone-based therapies) can be employed to terminate H.pylori infection if antimicrobial sensitivity data are unavailable.Seng-Kee Chuah Feng-Woei Tsay Ping-I Hsu Deng-Chyang Wu 2011World Journal of Gastroenterology2011,17,35:22
2Effect of ginger Effect of ginger on gastric motility and symptoms of functional dyspepsiaon gastric motility and symptoms of functional dyspepsia显示文摘AIM:To evaluate the effects of ginger on gastric motility and emptying,abdominal symptoms,and hormones that influence motility in dyspepsia.METHODS:Eleven patients with functional dyspepsia were studied twice in a randomized double-blind manner.After an 8-h fast,the patients ingested three capsules that contained ginger(total 1.2 g) or placebo,followed after 1 h by 500 mL low-nutrient soup.Antral area,fundus area and diameter,and the frequency of antral contractions were measured using ultrasound at frequent intervals,and the gastric half-emptying time was calculated from the change in antral area.Gastrointestinal sensations and appetite were scored using visual analog questionnaires,and blood was taken for measurement of plasma glucagon-like peptide-1(GLP-1),motilin and ghrelin concentrations,at intervals throughout the study.RESULTS:Gastric emptying was more rapid after ginger than placebo [median(range) half-emptying time 12.3(8.5-17.0) min after ginger,16.1(8.3-22.6) min after placebo,P ≤ 0.05].There was a trend for more antral contractions(P = 0.06),but fundus dimensions and gastrointestinal symptoms did not differ,nor did serum concentrations of GLP-1,motilin and ghrelin.CONCLUSION:Ginger stimulated gastric emptying and antral contractions in patients with functional dyspepsia,but had no impact on gastrointestinal symptoms or gut peptides.Ming-Luen Hu Christophan K Rayner Keng-Liang Wu Seng-Kee Chuah Wei-Chen Tai Yeh-Pin Chou Yi-Chun Chiu King-Wah Chiu Tsung-Hui Hu 2011World Journal of Gastroenterology2011,17,1:19
3Clinical characteristics and prognostic factors of splenic abscess:A review of 67 cases in a single medical center of Taiwan显示文摘瞄准:在 19 年的一个时期期间在台湾的一个医学中心分析脾的脓肿的 67 个盒子。方法:从 1986 年 1 月到 2004 年 12 月,有脾的脓肿的 67 个病人的一个总数为回顾的学习被注册。临床的特征,内在的疾病,有机体系列,治疗学的方法, APACHE II 分数,和死亡率被分析。结果:与 54.1+/-14.1 年的吝啬的年龄有 41 男性和 26 女性。为 28.4% 的多重脾的脓肿(MSA ) 报道和在 71.6% 病人的独居的脾的脓肿。57 个病人(35.8%) 中的 26 个有额外的脾的脓肿,与肝(34.6%) 的领先的地点。微生物学文化在血文化在 58 个病人(86.6%) 是积极的,与 71.8% 并且 93.5% 在脓肿文化。与肺炎杆菌(22.4%) 的领先的病原体,支配的克否定杆菌(GNB ) 感染(55.2%) 由克跟随了积极球菌(GPC ) 感染(31%) 。脾切除术在 26 被执行在 21 的病人(38.8%) ,经皮的排水或渴望(31.3%) ,和在 20 个病人(29.9%) 独自一个的抗菌素治疗。最后, 67 个病人中的 12 个到期了(17.9 %) 。由统计,感染 GNB 的怒气是可能的与 GPC (P=0.036 ) 与感染相比开发多发性脓肿。有 GNB 感染(P=0.009 ) 和多发性脓肿(P=0.011 ) 的病人与 GPC 感染和独居的脓肿比病人经历了更高的死亡率。12 的吝啬的 APACHE II 分数到期了病人(16.3+/-3.2 ) 比 55 幸存(7.2+/-3.8 )(P<0.001 ) 的显著地高。结论:MSA, GNB 感染,和高 APACHE II 分数是差的预示的因素。当这些风险因素是在场的时,早外科的干预应该被鼓励。Kuo-Chin Chang Seng-Kee Chuah Chi-Sin Changchien Tung-Lung Tsai Sheng-Nan Lu Yi-Chun Chiu Yaw-Sen Chen Chih-Chi Wang Jui-Wei Lin Chuan-Mo Lee Tsung-Hui Hu 2006World Journal of Gastroenterology2006,12,3:16
4Current status in the treatment options for esophageal achalasia显示文摘Recent advances in the treatment of achalasia include the use of high-resolution manometry to predict the outcome of patients and the introduction of peroral endoscopic myotomy(POEM).The first multicenter randomized,controlled,2-year follow-up study conducted by the European Achalasia Trial group indicated that laparoscopic Heller myotomy(LHM)was not superior to pneumatic dilations(PD).Publications on the long-term success of laparoscopic surgery continue to emerge.In addition,laparoscopic single-site surgery is applicable to advanced laparoscopic operations such as LHM and anterior fundoplication.The optimal treatment option is an ongoing matter of debate.In this review,we provide an update of the current progress in the treatment of esophageal achalasia.Unless new conclusive data prove otherwise,LHM is considered the most durable treatment for achalasia at the expense of increased reflux-associated complications.However,PD is the first choice for non-surgical treatment and is more costeffective.Repeated PD according to an'on-demand'strategy based on symptom recurrence can achieve long-term remission.Decision making should be based on clinical evidence that identifies a subcategory of patients who would benefit from specific treatment options.POEM has shown promise but its long-term efficacy and safety need to be assessed further.Seng-Kee Chuah Chien-Hua Chiu Wei-Chen Tai Jyong-Hong Lee Hung-I Lu Chi-Sin Changchien Ping-Huei Tseng Keng-Liang Wu 2013World Journal of Gastroenterology2013,19,33:15
52011 update on esophageal achalasia显示文摘There have been some breakthroughs in the diagnosis and treatment of esophageal achalasia in the past few years.First,the introduction of high-resolution manometry with pressure topography plotting as a new diagnostic tool has made it possible to classify achalasia into three subtypes.The most favorable outcome is predicted for patients receiving treatment for type Ⅱ achalasia (achalasia with compression).Patients with typeⅠ(classic achalasia) and type Ⅲ achalasia (spastic achalasia) experience a less favorable outcome.Second,the first multicenter randomized controlled trial published by the European Achalasia Trial group reported 2-year follow-up results indicating that laparoscopic Heller myotomy was not superior to endoscopic pneumatic dilation (PD).Although the follow-up period was not long enough to reach a convincing conclusion,it merits the continued use of PD as a generally available technique in gastroenterology.Third,the novelendoscopic technique peroral endoscopic myotomy is a promising option for treating achalasia,but it requires increased experience and cautious evaluation.Despite all this good news,the bottom line is a real break-through from the basic studies to identify the actual cause of achalasia that may impede treatment success is still anticipated.Seng-Kee Chuah Pin-I Hsu Keng-Liang Wu Deng-Chyang Wu Wei-Chen Tai Chi-Sin Changchien 2012World Journal of Gastroenterology2012,18,14:14
6Predictors of rebleeding after initial hemostasis with epinephrine injection in high-risk ulcers显示文摘AIM: To identify the predictors of rebleeding after initial hemostasis with epinephrine injection (EI) in patients with high-risk ulcers. METHODS: Recent studies have revealed that endoscopic thermocoagulation, or clips alone or combined with EI are superior to EI alone to arrest ulcer bleeding. However, the reality is that EI monotherapy is still common in clinical practice. From October 2006 to April 2008, high-risk ulcer patients in whom hemorrhage was stopped after EI monotherapy were studied using clinical, laboratory and endoscopic variables. The patients were divided into 2 groups: sustained hemostasis and rebleeding. RESULTS: A total of 175 patients (144, sustainedhemostasis; 31, rebleeding) were enrolled. Univariate analysis revealed that older age (≥ 60 years), advanced American Society of Anesthesiology (ASA) status (category Ⅲ , Ⅳ and Ⅴ ), shock, severe anemia (hemoglobin < 80 g/L), EI dose ≥ 12 mL and severe bleeding signs (SBS) including hematemesis or hematochezia were the factors which predicted rebleeding. However, only older age, severe anemia, high EI dose and SBS were independent predictors. Among 31 rebleeding patients, 10 (32.2%) underwent surgical hemostasis, 15 (48.4%) suffered from delayed hemostasis causing major complications and 13 (41.9%) died of these complications. CONCLUSION: Endoscopic EI monotherapy in patients with high-risk ulcers should be avoided. Initial hemostasis with thermocoagulation, clips or additional hemostasis after EI is mandatory for such patients to ensure better hemostatic status and to prevent subsequent rebleeding, surgery, morbidity and mortality.Ming-Luen Hu King-Wah Chiu Yi-Chun Chiu Yeh-Pin Chou Tsung-Hui Hu Shue-Shian Chiou Seng-Kee Chuah 2010World Journal of Gastroenterology2010,16,43:12
7Endoscope-guided pneumatic dilation for treatment of esophageal achalasia显示文摘Pneumatic dilation(PD) is considered to be the first line nonsurgical therapy for achalasia.The principle of the procedure is to weaken the lower esophageal sphincter by tearing its muscle fibers by generating radial force.The endoscope-guided procedure is done without fluoroscopic control.Clinicians usually use a lowcompliance balloon such as Rigiflex dilator to perform endoscope-guided PD for the treatment of esophageal achalasia.It has the advantage of determining mucosal injury during the dilation process,so that a repeat endoscopy is not needed to assess the mucosal tearing.Previous studies have shown that endoscope-guided PD is an efficient and safe nonsurgical therapy with results that compare well with other treatment modalities.Although the results may be promising,long-term follow-up is required in the near future.Seng-Kee Chuah Tsung-Hui Hu Chi-Sin Changchien 2010World Journal of Gastroenterology2010,16,4:9
8Endosonographic surveillance of 1-3 cm gastric submucosal tumors originating from muscularis propria显示文摘AIM To observe the natural course of 1-3 cm gastric submucosal tumors originating from the muscularis propria(SMTMPs).METHODS By reviewing the computerized medical records over a period of 14 years(2000-2013), patients with 1-3 cm gastric SMTMPs who underwent at least two endoscopic ultrasound(EUS) examinations were enrolled. Tumor progression was defined as a ≥ 1.2 times enlargement in tumor diameter observed during EUS surveillance. All patients were divided into stationary and progressive subgroups and further analyzed. We also reviewed the patients in the progressive subgroup again in 2016.RESULTS A total of 88 patients were studied, including 25 in the progressive subgroup. The mean time of EUS surveillance was 24.6 mo in the stationary subgroup and 30.7 mo in the progressive subgroup. Risk factors for tumor progression included larger tumor size and irregular border. Initial tumor size > 14.0 mm may be considered a cut-off size for predicting tumor progression. Seventeen patients underwent surgery, of whom 13 had gastrointestinal stromal tumors(GISTs) and 4 had leiomyomas. Tumor progression was found only in patients with GISTs. All of the tumors exhibited benign behaviors without metastasis until 2016.CONCLUSION Most 1-3 cm gastric SMTMPs(71.6%) are indolent. Tumor progression was found only in GISTs, and it is a good predictor for differentiating GISTs from leiomyomas. Predictors of tumor progression include larger tumor size(> 14.0 mm) and irregular border.ming-luen hu keng-liang wu chi-sin changchien seng-kee chuah yi-chun chiu 2017World Journal of Gastroenterology2017,23,12:9
9Impacts of different drying strategies on drying characteristics,the retention of bio-active ingredient and colour changes of dried Roselle显示文摘The drying kinetics of Roselle(Hibiscus sabdariffa L) of variety Terengganu(UMKL-1) and the quality attribution of Roselle were studied. The experiments were conducted using four different drying methods, including solar greenhouse drying(SD), solar greenhouse with intermittent heat pump drying(SIHP), hot air drying(HA) and heat pump drying(HP). Among the four drying methods, HP achieved the highest drying rate at a range from0.054 g H_2 O·(g DM)^(-1) ·min^(-1) to 0.212 g H_2 O·(g DM)^(-1)·min^(-1) while SD had the lowest drying rate, measured at 0.042 g H_2 O·(g DM)^(-1)·min^(-1).The analysis on colour kinetics revealed that there is no significant colour loss(p > 0.05) observed from HP's dried Roselle. Greater amount of flavonoid compounds i.e. protocatechuic acid was found in SD and SIHP dried finished product whereas HP's dried Roselle contains higher percentage of catechin as compared to other drying methods.Thing Chai Tham Mei Xiang Ng Shu Hui Gan Lee Suan Chua Ramlan Aziz Luqman Chuah Abdullah Sze Pheng Ong Nyuk Ling Chin Chung Lim Law 2018Chinese Journal of Chemical Engineering2018,26,2:7
10食管超声心动图在重危心脏病人诊断治疗中的价值显示文摘目的 为评价食管超声心动图 (TEE)在重危心脏病人诊断治疗中的价值 ,对 3 7例收住监护病房的重症心血管病人进行了经胸超声心动图 (TTE)和TEE检查 ,其中男 2 5例 ,女 1 2例 ,平均年龄57( 1 9~ 85)岁。入选对象包括怀疑夹层动脉瘤 2 3例、心脏瓣膜功能异常 9例、感染性心内膜炎 3例 ,心内分流 2例。结果 所有病人均可耐受TEE检查 ,无并发症发生 ,TEE较TTE可提供更高的阳性诊断结果 ,阳性率分别为 65 0 %和 3 8 0 % ,在怀疑夹层动脉瘤者中 ,TEE检出夹层撕裂膜 1 4例 ;而TTE仅检出 7例 ,且图象欠清 ,检出部位有限。在 4例人工机械瓣膜功能异常者中 ,TEE发现瓣膜部位血栓形成 3例。结论 在对心脏大血管疾病的诊断中 ,TEE阳性诊断率高于TTE ,尤其在怀疑夹层动脉瘤及人工机械瓣膜病变时 ,应行TEE检查。即使在重危病人 ,TEE也是一种安全有效的诊断手段。张宝娓 Ding Zeepin Chee Teksiong Chuah Sengchye 1998中国介入心脏病学杂志1998,6,3:5
11Delayed presentation of intrathoracic esophageal perforation after pneumatic dilation for achalasia显示文摘Pneumatic dilation(PD)is considered to be a safe and effective first line therapy for achalasia.The major adverse event caused by PD is esophageal perforation but an immediate gastrografin test may not always detect a perforation.It has been reported that delayed management of perforation for more than 24 h is associated with high mortality.Surgery is the treatment of choice within 24 h,but the management of delayed perforation remains controversial.Hereby,we report a delayed presentation of intrathoracic esophageal perforation following PD in a 48-year-old woman who suffered from achalasia.She completely recovered after intensive medical care.A review of the literature is also discussed.Ming-Tzung Lin King-Wah Chiu Yeh-Pin Chou Ming-Chao Tsai Tsung-Hui Hu Chuan-Mo Lee Chi-Sin Changchien Seng-Kee Chuah 2009World Journal of Gastroenterology2009,15,35:5
12Gastric juice acidity in upper gastrointestinal diseases显示文摘AIM: To search the independent factors determining gastric juice acidity and to investigate the acidity of gastric juices in various benign and malignant upper gastrointestinal diseases. METHODS: Fasting gastric juice acidity of 165 healthysubjects and 346 patients with esophageal ulcer (n = 21), gastric ulcer (n = 136), duodenal ulcer (n = 100) or gastric cancer (n = 89) were measured and compared. Additionally, gastric specimens were taken from the antrum and body for rapid urease test and histological examination. RESULTS: Multivariate analysis revealed that bile stain of gastric juice, high acute inflammatory score of the corpus, and atrophy of the corpus were independent risk factors for the development of gastric hypoacidity with odds ratios of 3.1 (95% CI: 1.3-7.3), 3.1 (95% CI: 1.2-7.9) and 3.5 (95% CI: 1.3-9.2). Esophageal ulcer and duodenal ulcer patients had a lower pH level (1.9 and 2.1 vs 2.9, both P < 0.05) of gastric juices than healthy subjects. In contrast, gastric ulcer and gastric cancer patients had a higher pH level (3.4 and 6.6 vs 2.9, both P < 0.001) than healthy controls. Hypoacidity existed in 22%, 5%, 29%, 5% and 88% of healthy subjects, esophageal ulcer, gastric ulcer, duodenal ulcer and gastric cancer patients, respectively. CONCLUSION: Bile reflux, atrophy and dense neutrophil infiltrate of the corpus are three independent factors determining the acidity of gastric juice.Pei-Jung Lu Ping-I Hsu Chung-Hsuan Chen Michael Hsiao Hui-Hwa Tseng Kung-Hung Lin Seng-Kee Chuah 2010World Journal of Gastroenterology2010,16,43:5
13First-week clinical responses to dexlansoprazole 60 mg and esomeprazole 40 mg for the treatment of grades A and B gastroesophageal reflux disease显示文摘AIM To compare the one-week clinical effects of single doses of dexlansoprazole and esomeprazole on grades A and B erosive esophagitis.METHODS We enrolled 175 adult patients with gastroesophageal reflux disease(GERD). The patients were randomized in a 1:1 ratio into two sequence groups to define the order in which they received single doses of dexlansoprazole(n = 88) and esomeprazole(n = 87) for an intention-to-treat analysis. The primary endpoints were the complete symptom resolution(CSR) rates at days 1, 3, and 7 after drug administration.RESULTS Thirteen patients were lost to follow-up, resulting in 81 patients in each group for the per-protocol analysis. The CSRs for both groups were similar at days 1, 3 and 7. In the subgroup analysis, the female patients achieved higher CSRs in the dexlansoprazole group than in the esomeprazole group at day 3(38.3% vs 18.4%, P = 0.046). An increasing trend toward a higher CSR was observed in the dexlansoprazole group at day 7(55.3% vs 36.8%, P = 0.09). In the esomeprazole group, female sex was a negative predictive factor for CSR on post-administration day 1 [OR =-1.249 ± 0.543; 95%CI: 0.287(0.099-0.832), P = 0.022] and day 3 [OR =-1.254 ± 0.519; 95%CI: 0.285(0.103-0.789), P = 0.016]. Patients with spicy food eating habits achieved lower CSRs on day 1 [37.3% vs 21.4%, OR =-0.969 ± 0.438; 95%CI: 0.380(0.161-0.896), P = 0.027]. CONCLUSION The overall CSR for GERD patients was similar at days 1-7 for both the dexlansoprazole and esomeprazole groups, although a higher incidence of CSR was observed on day 3 in female patients who received a single dose of dexlansoprazole.Chih-Ming Liang Ming-Te Kuo Pin-I Hsu Chao-Hung Kuo Wei-Chen Tai Shih-Cheng Yang Keng-Liang Wu Hsing-Ming Wang Chih-Chien Yao Cheng-En Tsai Yao-Kuang Wang Jiunn-Wei Wang Chih-Fang Huang Deng-Chyang Wu Seng-Kee Chuah 2017World Journal of Gastroenterology2017,23,47:4
14Five-year sequential changes in secondary antibiotic resistance of Helicobacter pylori in Taiwan显示文摘AIM: To determine changes in the antibiotic resistance of Helicobacter pylori(H. pylori) in southern Taiwan after failure of first-line standard triple therapy.METHODS: We analyzed 137 H. pylori-infected isolates from patients who experienced eradication failure after standard first-line triple therapy from January2010 to December 2014. The H. pylori strains were tested for susceptibility to amoxicillin, clarithromycin,levofloxacin, metronidazole and tetracycline using the E-test method. The minimal inhibitory concentration(MIC) was determined by the agar dilution test.MIC values of ≥ 0.5, ≥ 1, ≥ 1, ≥ 4 and ≥ 8 mg/L were considered to be the resistance breakpoints for amoxicillin, clarithromycin, levofloxacin, tetracycline and metronidazole, respectively.RESULTS: A high resistance rate was found for clarithromycin(65%-75%) and metronidazole(30%-40%)among patients who failed first-line standard therapy.The resistance levels to amoxicillin and tetracycline remained very low; however, levofloxacin resistance was as high as 37.5% in 2010 but did not increase any further during the past 5 years. The rates of resistance to these antibiotics did not show a statistically significant upward or downward trend.CONCLUSION: Antibiotic resistance of H. pylori remains a problem for the effective eradication of this pathogen and its associated diseases in Taiwan. High clarithromycin resistance indicated that this antibiotic should not be prescribed as a second-line H. pylori eradication therapy. Moreover, levofloxacin-based second-line therapy should be used cautiously, and the local resistance rates should be carefully monitored.I-Ting Wu Seng-Kee Chuah Chen-Hsiang Lee Chih-Ming Liang Lung-Sheng Lu Yuan-Hung Kuo Yi-Hao Yen Ming-Luen Hu Yeh-Pin Chou Shih-Cheng Yang Chung-Mou Kuo Chung-Huang Kuo Chun-Chih Chien Yu-Shao Chiang Shue-Shian Chiou Tsung-Hui Hu Wei-Chen Tai 2015World Journal of Gastroenterology2015,21,37:3
15Efficacy of texture analysis of pre-operative magnetic resonance imaging in predicting microvascular invasion in hepatocellular carcinoma显示文摘BACKGROUND Presence of microvascular invasion(MVI)indicates poorer prognosis postcurative resection of hepatocellular carcinoma(HCC),with an increased chance of tumour recurrence.By present standards,MVI can only be diagnosed postoperatively on histopathology.Texture analysis potentially allows identification of patients who are considered‘high risk’through analysis of pre-operative magnetic resonance imaging(MRI)studies.This will allow for better patient selection,improved individualised therapy(such as extended surgical margins or adjuvant therapy)and pre-operative prognostication.AIM This study aims to evaluate the accuracy of texture analysis on pre-operative MRI in predicting MVI in HCC.METHODS Retrospective review of patients with new cases of HCC who underwent hepatectomy between 2007 and 2015 was performed.Exclusion criteria:No preoperative MRI,significant movement artefacts,loss-to-follow-up,ruptured HCCs,previous hepatectomy and adjuvant therapy.Fifty patients were divided into MVI(n=15)and non-MVI(n=35)groups based on tumour histology.Selected images of the tumour on post-contrast-enhanced T1-weighted MRI were analysed.Both qualitative(performed by radiologists)and quantitative data(performed by software)were obtained.Radiomics texture parameters were extracted based on the largest cross-sectional area of each tumor and analysed using MaZda software.Five separate methods were performed.Methods 1,2 and 3 exclusively made use of features derived from arterial,portovenous and equilibrium phases respectively.Methods 4 and 5 made use of the comparatively significant features to attain optimal performance.RESULTS Method 5 achieved the highest accuracy of 87.8%with sensitivity of 73%and specificity of 94%.CONCLUSION Texture analysis of tumours on pre-operative MRI can predict presence of MVI in HCC with accuracies of up to 87.8%and can potentially impact clinical management.Jordan Zheng Ting Sim Terrence Chi Hong Hui Tong Kuan Chuah Hsien Min Low Cher Heng Tan Vishal GShelat 2022World Journal of Clinical Oncology2022,13,11:3
16The Clinical Correlations of Helicobacter pylori Virulence Factors and Chronic Spontaneous Urticaria显示文摘Yi-Chun Chiu Wei-Chen Tai Seng-Kee Chuah Ping-I Hsu Deng-Chyang Wu Keng-Liang Wu Chao-Cheng Huang Ji-Chen Ho Johannes Ring Wen-Chieh Chen Chao-Hung Kuo 2013<journal-title>Gastroenterology Research and Practice2013,,:2
17Heat Transfer Performance of Microgroove Back Plate Heat Pipes with Working Fluid and Heating Power显示文摘Micro heat pipes(MHP) cooling is one of the most efficient solutions to radiate heat for high heat flux electronic components in data centers. It is necessary to improve heat transfer performance of microgroove back plate heat pipes. This paper discusses about influence on thermal resistance through experiments and numerical simulation with different working fluids, filling ratio and heat power. Thermal resistance of the CO2 filled heat pipe is 14.8% lower than the acetone filled heat pipe. In the meantime, at the best filling ratio of 40%, the CO2 filled heat pipe has the optimal heat transfer behavior with the smallest thermal resistance of 0.123 K/W. The thermal resistance continues to decline but the magnitude of decreases is going to be minor. In addition, this paper illustrates methods about how to enhance heat pipe performance from working fluids, filling ratio and heat power, which provides a theoretical basis for practical applications.WU Yanpeng JIA Jie TIAN Dongmin CHUAH Yew Khoy 2020Journal of Thermal Science2020,29,4:2
18The synthesis and applications of α-zirconium phosphate显示文摘The synthesis of α-ZrP with a range of crystallinity is of high importance due to the different requirements in various applications.Nanosized crystalline α-ZrP is typically obtained by refluxing amorphous ZrP in concentrated H3PO4 solutions.Microcrystalline α-ZrP are obtained by direct precipitation in the presence of either HF or oxalic acid which are used as complexing agents for zirconium.These larger crystals are useful as ion-exchangers in column-type applications as the back pressure can be significantly reduced.A novel minimalistic synthesis that is green,simple and fast is highlighted in this review.Both nano-sized and micro-sized α-ZrP can be prepared via this protocol to meet many potential applications.Applications of α-ZrP in ion-exchange,catalysis,lubricants,intercalation hosts,polymer fillers and fire retardants are discussed.Yu Cheng Gaik Khuan Chuah 2020Chinese Chemical Letters2020,31,2:2
19Oil removal from aqueous state by natural fibrous sorbent: An overview显示文摘Rafeah Wahi Luqman Abdullah Chuah Thomas Shean Yaw Choong Zainab Ngaini Mohsen Mobarekeh Nourouzi 2013Separation and Purification Technology2013,,:2
20Pseudoachalasia in a patient after truncal vagotomy surgery successfully treated by subsequent pneumatic dilations显示文摘Pseudoachalasia 是一个困难的条件让临床医生甚至由测压法,放射学的研究或内视镜检查法区分开来与自发的弛缓不能。它的病原学通常与肿瘤被联系。在大多数情况中,诊断在外科的探索以后被做。疾病的建议致病被看作远侧的食管的机械阻塞或在盒子的多数影响 meyenteric 丛的禁止的神经原的恶意的渗入。外科作为 pseudoachalasia 的一个原因被报导了。我们报导受不了 pseudo-achalasia 在树干的迷走神经切断术以后引起的 deglutination 混乱的一个 70 岁的人。病人在九年的后续和从在灵魂膨胀以后的 pseudoachalasia 的食道的活动性地位的完全的恢复以后是没有症状的。我们也考察了 pseudoachalasia 的文学。Seng-Kee Chuah Chung-Mou Kuo Keng-Liang Wu Chi-Sin Changchien Tsung-Hui Hu Chi-Chih Wang Yi-Chun Chiu Yeh-Pin Chou Pin-I Hsu King-Wah Chiu Chung-Huang Kuo Shue-Shian Chiou Chuan-Mo Lee 2006World Journal of Gastroenterology2006,12,31:2
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