检索结果-南通市图书馆

With two episodes of right retromandibular angle subcutaneous emphysema during right upper molar crown preparation:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第19期11卷 4698-4706页

作者： Yun-Peng Bai Jing-Jing Sha Chang-Chang Chai Hai-Peng Sun Department of Prosthodontics and Implantology Shenzhen University Affiliated Shenzhen Stomatology HospitalShenzhen 518001Guangdong ProvinceChina Department of Endodontics Shenzhen University Affiliated Shenzhen Stomatology HospitalShenzhen 518001Guangdong ProvinceChina

BACKGROUND Subcutaneous emphysema is a well-known complication of oral surgery,especially during mandibular wisdom tooth ***,subcutaneous emphysema secondary to dental procedures such as crown preparation is *** main symptom of emphysema is swelling and crepitus on *** emphysema may spread along the fascial planes and cause deep space infections or a *** SUMMARY In this paper,we report a 34-year-old female who underwent upper molar tooth preparation for crowns and subsequently developed extensive subcutaneous emphysema on the retromandibular angle on two different *** treatment plan for this patient involved close observation of the airway,and administration of dexamethasone and antibiotics via intravenous drip or *** bag compression was quickly applied and medication was prescribed to alleviate discomfort and promote *** the main reason is unclear,the presence of a fissure in the molar is an important clue which may contribute to the development of subcutaneous emphysema during crown *** is imperative for dental professionals to recognize such pre-disposing factors in order to minimize the risk of *** This case highlights the need for prompt diagnosis and management of subcutaneous emphysema because of the risk of much more serious *** of relatively“benign”subcutaneous emphysema during any dental procedure is critical not only for inexperienced dentists,but also for those who work in rural and remote settings as members of surgical *** this study,we review the clinical presentation,mechanism,and differential diagnosis of subcutaneous emphysema.

关键词： Subcutaneous emphysema Dental procedures Dental prosthesis preparation Retro-mandibular space Intraoperative complications Case report

Constructing temporal and spatial water vapor figures by GPS remote sensing along slant rays

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Earth Sciences 2007年第2期50卷 296-305页

作者： MAO Hui MAO JieTai BI YanMeng LI ChengCai LIU XiaoYang Department of Atmospheric Sciences School of PhysicsPeking UniversityBeijing 100871China Shenzhen Meteorological Bureau Shenzhen 518001China

A Global Positioning System (GPS) receiver can generally track 5-7 rays from GPS satellites at any moment, and water vapor along these ray paths (slant-path water vapor, SWV) may be retrieved using the methods developed in recent years. This paper suggests two new parameters-absolute vertical SWV (VSWV) and relative VSWV derived from SWV, and their temporal and spatial figures can reflect the heterogeneous distribution and variation of water vapor field. This approach has been applied to the weather diagnoses in a severe storm event in Beijing during July 2004, and it is concluded that the temporal and spatial figures of absolute VSWV and relative VSWV can be useful in monitoring the evolution of water vapor field and be potential in better understanding the precipitation process.

关键词： GPS absolute VSWV relative VSWV water vapor precipitation

在线全文

学校读者我要写书评

暂无评论

我国高等职业教育法规与政策探析

职业技术教育 2003年第4期24卷 13-15页

作者：李均深圳市教育科学研究所广东深圳518001

20世纪90年代以来,我国高职法规政策建设取得了很大的成绩,但仍然存在着一些不足,大力发展高职的决策与某些现行政策之间仍然存在着矛盾。本文在分析高职法规政策建设成绩与问题的基础上,提出若干改进意见。

关键词：教育法规高等职业教育中国教育政策法律地位

Ordinary Toxicity of Chlorine Dioxide and By-products Chlorite and Chlorate in Water

同方期刊数据库人大复印报刊资料评论

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2003年第3期20卷 108-112页

作者：王丽常爱敏黄君礼 Shenzhen Water Quality Center Shenzhen518001 Harbin Institute of Technology School of Environmental EngineeringHarbin150090

Acute toxicity and accumulated toxicity of chlorine dioxide (ClO2) and by-products chlorite (ClO2-) and chlorate (ClO3-) in water acted on mice are studied by the method of Horn and accumulation coefficient. Subchronic toxicity of the mixture of ClO2 and ClO2-and ClO3- in water acted on rat is studied though feeding test for 90 days, including statistical analysis of variance on weight gaining, food utilization efficiency,index of blood and serum,liver (or kidney) to body weight ratio, and histopathological examination on liver and kidney. The results show that aqueous solution of ClO2, NaClO2 and NaClO3 ( with the concentration of 276.5 mg/L, 200 mg/L and 200 mg/L respectively) and the mixed aqueous solution of ClO2 with the concentration of 553 mg/L are actually non-poisonous , and non-cumulative aqueous solution as well.

关键词： Chlorine dioxide chlorite chlorate toxicity water

Frequency Effects on 2-Chlorobiphenyl Sonication

在线全文

学校读者我要写书评

暂无评论

Tsinghua Science and Technology 2004年第2期9卷 181-184页

作者：张光明常爱敏王丽 Graduate School at Shenzhen Tsinghua University Shenzhen 518057 China Shenzhen Water Quality Center Shenzhen 518001 China

In order to better understand sonication, this paper studies the effect of sound frequency on the 2-chlorobiphenyl (2-CB) sonication and analyzes two prevailing hypotheses. Four frequencies 205, 358, 618, and 1071 kHz were tested. The 2-CB degradation kinetics, dechlorination, and inhibition by a free radical scavenger were examined. The results show that sonication effectively degrades 2-CB, and the first order rate constants using 0.4 W/cm3 sonication are 0.214, 0.508, 0.454, and 0.248 min1 at 205, 358, 618, and 1071 kHz, respectively. Good dechlorination was also achieved. 358 kHz frequency provided the most effi-cient 2-CB degradation, but the worst dechlorination, and was most sensitive to the free radical scavenger. Detailed analyses show that thermolysis is relatively stable at these frequencies while the free radical reac-tion depends strongly on the sound frequency.

关键词： sonication 2-chlorobiphenyl free radical reaction pollution control

Gastroesophageal reflux: the features in elderlypatients

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 1999年第5期5卷 421-423页

作者： Huang X Zhu HM Deng CZ Porro GB Sangaletti O Pace F Shenzhen Peoples Hosp Dept Gastroenterol Shenzhen 518001 Guangdong Prov Peoples R China Univ Milan Gastrointestinal Unit Milan Italy

AIM To compare the features ofgastroesophageal reflux disease between elderlyand younger *** Twenty-four hour pH-monitoring andendoscopy were P6rformed for the 66 elderlypatients with typical gastroesophageaI refluxsymptoms, and the results were compared with112 symptomatic younger *** The results of 24-h pH-monitoringand endoscopy showed that the elderly patientshad pathological reflux and reflux esophagitismore frequently than the younger patients.P6rcentage time with pH< 4 in elderly patientswith reflux esophagitis was 32.5% in 24 hours,as compared with 12.9% in the younger patientswith reflux esophagitis (P < 0 .05 ). The elderlypatients with reflux esophagitis have longerP6riOds of acid reflux in both upright and Supinepositions than the younger patients. Endoscopyshowed that 20 .8% of elderIy patients had grade Ⅲ / Ⅳ esophagitis, whereas only 3.4% ofyounger patients had grade Ⅲ/ Ⅳ esophagitis(P < 0.002 ). Percentages of grades Ⅰ /Ⅱesophagitis in the two groups were 12.5% and26. 5%, respectiveIy (P< 0. 002 ).CONCLUSION Elderly patients, as comparedwith younger patients, have more severegastroesophageal reflux and esophageal *** incompetence of lower esophageal sphincter and the presence of hiataI hernia may beimportant factors leading to the difference in incidence and severity of reflux esophagitisbetween elderly and younger patients.

关键词： gastroesophageal reflux esophagitis hiatal hernia

Clinical Observation on Juvenile Macular Hole without Trauma and Hypermyopia

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Eye Science 2005年第1期21卷 1-6,11页

作者： TieyingZhao QingshanChen MingLi XunqingGu RulongGao FengWen ShenzhenOphthalmicCenter MedicalCollegeofJinanUniversityandShenzhenEyeHospitalShenzhen518001China ZhongshanOphtharnicCenter SunYat-senUniversityGuangzhou510060China

Purpose: To investigate the clinical characteristics of juvenile macular hole without trauma and hypermyopia, and research the mechanism of macular ***: Sixty-seven patients less than 40 years of age were studied retrospectively from June 1998 to March 2003. Five cases (7 eyes) aged from 22 to 38 years were reported and the clinical characteristics that had macular hole without trauma or hypermyopia were summed ***: There was 1 male and 4 females with visual acuity from 0.08 to 0.8. The images of optical coherence tomography (OCT) showed full thickness macular hole in 5 patients (7 eyes), and the diameters were from 87 to 1043 μm. Among them, 2 cases were combined with retina pigmentosa; 1 case with binocular Coat's disease; 1 case had bilateral macular hole combined with Eagles' disease; 1 case was combined with 2-2.5PD old retinochoroidal lesion under middle-peripheral fundus, and 1.5 PD retinal pigment epithelium (RPE) defect on the optical ***: The juvenile macular hole without trauma and hypermyopia combined the different retina vascular damages and the RPE defects.

关键词：视网膜疾病青少年黄斑裂洞眼部损伤临床研究

COVID-19 managed with early non-invasive ventilation and a bundle pharmacotherapy: A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2020年第9期8卷 1705-1712页

作者： Mian Peng Di Ren Xue-Yan Liu Jin-Xiu Li Rong-Lin Chen Bao-Jun Yu Yong-Feng Liu Xi Meng Yan-Si Lyu Department of Intensive Care Unit the Third Affiliated Hospital of Shenzhen UniversityShenzhen 518001Guangdong ProvinceChina Department of Intensive Care Unit the Second People’s Hospital of ShenzhenShenzhen 518001Guangdong ProvinceChina Department of Intensive Care Unit Shenzhen People's HospitalFirst Affiliated Hospital of Southern University of Science and Technologythe Second Affiliated Hospital of Jinan UniversityShenzhen 518020Guangdong ProvinceChina Department of Intensive Care Unit the Third People’s Hospital of ShenzhenShenzhen 518001Guangdong ProvinceChina Department of Intensive Care Unit Shenzhen Longgang Central HospitalShenzhen 518001Guangdong ProvinceChina Department of Intensive Care Unit Shenzhen Baoan District People’s HospitalShenzhen 518001Guangdong ProvinceChina Department of Dermatology Shenzhen University General HospitalShenzhen 518067Guangdong ProvinceChina

BACKGROUND The coronavirus disease 2019(COVID-19)pandemic has become an immense public health burden,first in China and subsequently *** effective control measures for COVID-19,especially measures that can halt the worsening of severe cases to a critical status is of urgent *** SUMMARY A 52-year-old woman presented with a high fever(38.8°C),chills,dizziness,and ***,she had not been to Wuhan where COVID-19 emerged and did not have a family history of a disease cluster.A blood test yielded a white blood cell count of 4.41×109/L(60.6±2.67%neutrophils and 30.4±1.34%lymphocytes).Chest imaging revealed bilateral ground-glass lung *** on a positive nasopharyngeal swab nucleic acid test result and clinical characteristics,the patient was diagnosed with *** treatment with early non-invasive ventilation and a bundle pharmacotherapy,she recovered with a good *** Early non-invasive ventilation with a bundle pharmacotherapy may be an effective treatment regimen for the broader population of patients with COVID-19.

关键词： COVID-19 Non-invasive ventilation Bundle pharmacotherapy Case report Pneumonia Coronavirus

220kV变电站站内传统运行方式的弊端及改进措施

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

电力系统保护与控制 2009年第23期37卷 178-181页

作者：李洪卫深圳供电局广东深圳518001

以一起110kV线路开关拒动引发220kV站110kVI、IIM和四个110kV站全站失压的事故为引言,详细地分析了保护的动作行为,揭示220kV变电站站内传统运行方式的弊端,并从调整整定方案和站内运行方式的角度提出缩小事故的反事故措施,并在文章最... 详细信息

以一起110kV线路开关拒动引发220kV站110kVI、IIM和四个110kV站全站失压的事故为引言,详细地分析了保护的动作行为,揭示220kV变电站站内传统运行方式的弊端,并从调整整定方案和站内运行方式的角度提出缩小事故的反事故措施,并在文章最后择优推荐了改进措施。

关键词：拒动整定方案运行方式分裂运行失灵保护