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Relationship on the head Deviation Rate and Laying Length of Porous Tubes

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Journal of Harbin Institute of Technology(New Series) 2019年第5期26卷 88-96页

作者： Yameng Wang Huanfang Liu College of Water Conservancy and Architecture Engineering Shihezi University

To improve the utilization efficiency of water the laying length of porous tubes was analyzed. Considering long porous tubes the irrigation uniformity of porous tubes was studied by analyzing the deviation rate of the working head of porous tubes and through an impact analysis of the deviation ratio of flow rate based on laying length slope pressure head and perforation spacing. Results showed that the deviation ratio of the flow rate could be reduced by decreasing the length of tubes and increasing the slope. The deviation ratio of flow rate was less influenced by pressure head and perforation spacing. A best laid slope resulted in a longer laying length of the porous tubes and they were not constant.

关键词： flow deviation rate porous tubes deviation rate of working head laying length head loss

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CLINICAL SIGNIFICANCE OF ACUTE PHASE HYPERGLYCEMIA IN PATIENTS WITH SEVERE head INJURY

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中华创伤杂志 1998年第3期14卷 75-77页

作者：张赛杨树源王明璐天津市脑系科中心医院神经外科天津

ＣＬＩＮＩＣＡＬＳＩＧＮＩＦＩＣＡＮＣＥＯＦＡＣＵＴＥＰＨＡＳＥＨＹＰＥＲＧＬＹＣＥＭＩＡＩＮＰＡＴＩＥＮＴＳＷＩＴＨＳＥＶＥＲＥＨＥＡＤＩＮＪＵＲＹＺＨＡＮＧＳａｉ（张赛），ＹＡＮＧＳｈｕ－ｙｕａｎ（杨树源），ＷＡ... 详细信息

ＣＬＩＮＩＣＡＬＳＩＧＮＩＦＩＣＡＮＣＥＯＦＡＣＵＴＥＰＨＡＳＥＨＹＰＥＲＧＬＹＣＥＭＩＡＩＮＰＡＴＩＥＮＴＳＷＩＴＨＳＥＶＥＲＥＨＥＡＤＩＮＪＵＲＹＺＨＡＮＧＳａｉ（张赛），ＹＡＮＧＳｈｕ－ｙｕａｎ（杨树源），ＷＡＮＧＭｉｎｇ－ｌｕ（王明璐）Ｏｂｊ...

关键词：王明 ACUTE OF head SEVERE PHASE SIGNIFICANCE PATIENTS WITH 张赛杨树绿荫林木

Present status of studies on diffuse axonal injury

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Neural Regeneration Research 2006年第7期1卷 661-664页

作者： Jie Ma Chonggong Zhang Yi Li Department of Neurosurgeny Xinhua HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200092China Department of NeurosurgenyXinhua HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200092China Department of NeurosurgenyXinhua HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200092China

OBJECTIVE: To explain the present status of study on diffuse axonal injury, investigate its pathogenesis and pathophysiological changes, and suggest principles for the diagnosis and treatment. DATA SOURCES: Articles about diffuse axonal injury published in English from January 1994 to October 2006 were searched in Pubmed database using the of 'diffuse axonal injury, pathogenesis, therapy'. STUDY SELECTION: The collected articles were primarily screened to select those associated with diffuse axonal injury, the obviously irrelated articles were excluded, and the rest ones were retrieved manually, and the full-texts were searched. DATA EXTRACTION: Totally 98 articles were collected, 41 of them were involved, and the other 57 were excluded. DATA SYNTHESIS: Diffuse axonal injury is mainly caused by acceleratory or deceleratory injury, and its pathophysiological change is a progressive duration, local axonal injury finally develops to axonal breakage, mainly includes inactivation of natrium channel, intracellular Ca2+ overloading, activation of calcium protease, caspase, etc., and mitochondrial injury. At present, there is still lack of effective therapeutic methods for diffuse axonal injury, so we should actively explore more effective methods to relieve the pain of patients and improve their prognosis. CONCLUSION: At present, diffuse axonal injury has not attracted enough attentions in China, the mechanisms for its diagnosis and attack are still unclear, and the treatments are mainly aiming at the symptoms.

关键词： head Present status of studies on diffuse axonal injury

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Finite Element Analysis of Crossing Flow in an Intersected Fracture by Penalty Function Formulation

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Acta Geologica Sinica(English Edition) 1988年第2期1卷 223-231页

作者： Chen Mingyou Tian Kaiming Beijing Graduate School, Wuhan College of Geology, Beijing Beijing Graduate School Wuhan College of Geology Beijing

On the basis of Navier-Stokes equation, a digital analogue of crossing flow is carried out by means of finiteelement analysis performed through penalty function formulation. The results of the digital analogue are ingood agreement with that of the previous hydraulic physical simulation. They both demonstrate the effect of"deflection flow" occurring at the fracture intersection that the fracture-water crossing flow deflects △q intothe wide fracture.

关键词： Flow head

The influence of dummy head on measuring speech intelligibility

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Chinese Journal of Acoustics 2016年第2期35卷 178-192页

作者： ZHANG Siyu ZHENG Xiaolin MENG Zihou Communication Acoustics Laboratory Communication University of China

In order to investigate the influence of dummy head on measuring speech intelligi- bility, the objective and subjective speech intelligibility evaluation experiments were respectively carried out for different spatial configurations of a target source and a noise source in the horizontal plane. The differences between standard STIPA measured without a dummy head and binaural STIPA measured with a dummy head were compared and the correlation of subjective speech intelligibility and objective STIPA was analyzed. It is showed that the position of sound source affects significantly on binaural STIPA and subjective intelligibility measured by a dummy head or measured in a real-life scenario. The standard STIPA is closer to the lower value of the two binaural STIPA values. The speech intelligibility is higher for a single ear which is on the same side with the target source or on the other side of the noise source. Binaural speech intelligibility is always the lowest when both target and noise sources are at the same place but once apart the speech intelligibility will increase sharply. It is also found that the subjective intelligibility measured by a dummy head or measured in a real-life scenario is uncorrelated with standard STIPA, but correlated highly with STIPA measured with a dummy head. The subjective intelligibility of one single ear is correlated highly with STIPA measured at the same ear, and the binaural speech intelligibility is in well agreement with the higher value of the two binaural STIPA values.

关键词： head The influence of dummy head on measuring speech intelligibility

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Predictors of malignancy in chronic calcific pancreatitis with head mass

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World Journal of Gastrointestinal Surgery 2013年第4期5卷 97-103页

作者： Senthilkumar Perumal Ravichandran Palaniappan Sastha Ahanatha Pillai Vimalraj Velayutham Jeswanth Sathyanesan Institute of Surgical Gastroenterology and Liver Transplantation Government Stanley Medical College

AIM: To prospectively analyse the clinical, biochemical and radiological characteristics of the mass lesions arising in a background of chronic calcific pancreatitis (CCP). METHODS: Eighty three patients, who presented with chronic pancreatitis (CP) and a mass lesion in the head of pancreas between February 2005 and December 2011, were included in the study. Patients who were identified to have malignancy underwent Whipple' s procedure and patients whose investigations were suggestive of a benign lesion underwent Frey's procedure. Student t-test was used to compare the mean values of imaging findings [common bile duct (CBD), main pancreatic duct (MPD) size] and laboratory data [Serum bilirubin, carbohydrate antigen 19-9 (CA 19-9)] between the groups. Receiver operating characteristic curve (ROC curve) analysis was done to calculate the cutoff valves of serum bilirubin, CA 19-9, MPD and CBD size. The sensitivity, specificity, positive predictive valve (PPV) and negative predictive value (NPV) were calculated using these cut off points. Multivariate analysis was performed using logistic regression model. RESULTS: The study included 56 men (67.5%) and 27 women (32.5%). Sixty (72.3%) patients had tropical calcific pancreatitis and 23 (27.7%) had alcohol related CCP. Histologically, it was confirmed that 55 (66.3%) of the 83 patients had an inflammatory head mass and 28 (33.7%) had a malignant head mass. The mean age of individuals with benign inflammatory mass and those with malignant mass was 38.4 years and 45 years respectively. Significant clinical features that predicted a malignant head mass in CP were presence of a head mass in CCP of tropics, old age, jaundice, sudden worsening abdominal pain, gastric outlet obstruction and significant weight loss (P ≤ 0.05). The ROC curve analysis showed a cut off value of 5.8 mg/dL for serum bilirubin, 127 U/mL for CA 19-9, 11.5 mm for MPD size and 14.5 mm for CBD size. CONCLUSION: Elevated Serum bilirubin and CA 19-9, and dilated MPD and CBD were useful in predicting malign

关键词： Chronic calcific pancreatitis Pancreatic head mass Carcinoma head of pancreas Risk factors of malignancy

Fibroblast growth factor receptor 4 single nucleotide polymorphism Gly388Arg in head and neck carcinomas

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World Journal of Clinical Oncology 2019年第3期10卷 136-148页

作者： Eva Wimmer Stephan Ihrler Olivier Gires Sylvia Streit Wolfgang Issing Christoph Bergmann Department of Otorhinolaryngology Ludwig-Maximilians-University Institute of Pathology Ludwig-Maximilians-University Clinical Cooperation Group Personalized Radiotherapy of head and Neck Tumors Department of Molecular Biology Max-Planck-Institute for Biochemistry ENT Department Freeman Hospital Department of Otorhinolaryngology University of Duisburg-Essen

BACKGROUND head and neck squamous cell carcinoma(HNSCC) is considered to be a progressive disease resulting from alterations in multiple genes regulating cell proliferation and differentiation like receptor tyrosine kinases(RTKs) and members of the fibroblast growth factor receptors(FGFR)-family. Singlenucleotide polymorphism(SNP) Arg388 of the FGFR4 is associated with a reduced overall survival in patients with cancers of various types. We speculate that FGFR4 expression and SNP is associated with worse survival in patients with HSNCC.AIM To investigate the potential clinical significance of FGFR4 Arg388 in the context of tumors arising in HNSCC, a comprehensive analysis of FGFR4 receptor expression and genotype in tumor tissues and correlated results with patients' clinical data in a large cohort of patients with HNSCC was conducted.METHODS Surgical specimens from 284 patients with HNSCC were retrieved from the Institute of Pathology at the Ludwig-Maximilian-University in Germany.Specimens were analyzed using immunohistochemistry and polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP). The expression of FGFR4 was analyzed in 284 surgical specimens of HNSCC using immunohistochemstry. FGFR4 polymorphism was detected by PCR-RFLP.Patients' clinical data with a minimum follow-up of 5 years were statistically evaluated with a special emphasis on survival analysis employing Kaplan-Meier estimator and Cox regression analysis.RESULTS Concerning the invasive tumor areas the intensity of the FGFR4 expression was evaluated in a four-grade system: no expression, low expression, intermediate and high expression. FGFR4 expression was scored as "high"(+++) in 74(26%),"intermediate"(++) in 103(36.3%), and "low"(+) in 107(36.7%) cases. Analyzing the FGFR4 mutation it was found in 96 tumors(33.8%), 84 of them(29.6%) having a heterozygous and 12(4.2%) homozygous mutated Arg388 allele. The overall frequency concerning the mutant alleles demonstrated 65% vs 34% mutated alleles in general. FGFR4 Arg388 was si

关键词： Fibroblast growth factor receptor 4 Single-nucleotide polymorphism head and neck squamous cell carcinoma Reduced survival Cancer progression Polymerase chain reaction Immunohistochemistry Outcome

Role of ^(18)F-FDG PET/CT in pre and post treatment evaluation in head and neck carcinoma

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World Journal of Radiology 2014年第5期6卷 177-191页

作者： Bundhit Tantiwongkosi Fang Yu Anand Kanard Frank R Miller Division of Neuroradiology Department of Radiology and Otolaryngology Head Neck SurgeryUniversity of Texas Health Science Center at San Antonio San Antonio TX 78229 United States Imaging Service South Texas Veterans Health Care System San Antonio TX 78229 United States Department of Radiology University of Texas Health Science Center at San Antonio San Antonio TX 78229 United States Department of Medical Oncology University of Texas Health Science Center at San Antonio San Antonio TX 78229 United States Department of Otolaryngology head Neck Surgery University of Texas Health Science Center at San AntonioSan Antonio TX 78229 United States

head and neck cancer(HNC) ranks as the 6th most common cancer worldwide, with the vast majority being head and neck squamous cell carcinoma(HNSCC). The majority of patients present with complicated locally advanced disease(typically stage Ⅲ and Ⅳ) requiring multidisciplinary treatment plans with combinations of surgery, radiation therapy and chemotherapy. Tumor staging is critical to decide therapeutic planning. Multiple challenges include accurate tumor localization with precise delineation of tumor volume, cervical lymph node staging, detection of distant metastasis as well as ruling out synchronous second primary tumors. Somepatients present with cervical lymph node metastasis without obvious primary tumors on clinical examination or conventional cross sectional imaging. Treatment planning includes surgery, radiation, chemotherapy or combinations that could significantly alter the anatomy and physiology of this complex head and neck region, making assessment of treatment response and detection of residual/ recurrent tumor very difficult by clinical evaluation and computed tomography(CT) or magnetic resonance imaging(MRI). 18F-2-fluoro-2-deoxyD-glucose positron emission tomography/CT(18F-FDG PET/CT) has been widely used to assess HNC for more than a decade with high diagnostic accuracy especially in detection of initial distant metastasis and evaluation of treatment response. There are some limitations that are unique to PET/CT including artifacts, lower soft tissue contrast and resolution as compared to MRI, false positivity in post-treatment phase due to inflammation and granulation tissues, etc. The aim of this article is to review the roles of PET/CT in both pre and post treatment management of HNSCC including its limitations that radiologists must know. Accurate PET/CT interpretation is the crucial initial step that leads to appropriate tumor staging and treatment planning.

关键词： head and neck cancer Positron emission tomography Computed tomography Staging Post treatment Recurrence

Osteonecrosis of the femoral head: An update in year 2012

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World Journal of Orthopedics 2012年第5期3卷 49-57页

作者： Anjan P Kaushik Anusuya Das Quanjun Cui Department of Orthopaedic Surgery University of Virginia Charlottesville VA 22903 United States Department of Biomedical Engineering University of Virginia Charlottesville VA 22903 United States

Osteonecrosis is a phenomenon involving disruption to the vascular supply to the femoral head, resulting in articular surface collapse and eventual osteoarthritis. Although alcoholism, steroid use, and hip trauma remain the most common causes, several other etiologies for osteonecrosis have been identified. Basic science research utilizing animal models and stem cell applications continue to further elucidate the pathophysiology of osteonecrosis and promise novel treatment options in the future. Clinical studies evaluating modern joint-sparing procedures have demonstrated significant improvements in outcomes, but hip arthroplasty is still the most common procedure performed in these affected younger adults. Further advances in joint-preserving procedures are required and will be widely studied in the coming decade.

关键词： Osteonecrosis Avascular necrosis Femoral head Total hip arthroplasty Core decompression Hip