Objectives: To investigate the relationship between the perpetrator's sex, victim's position and slashing location as well as anthropometric parameters on distance and space required for slashing, to provide the theoretical basis for the judgment of whether the crime scene was consistent with the criminal activity space.
Methods: The kinematics data of 12 male and 12 female subjects slashing the neck of standing and supine mannequins as well as the chest of the standing mannequins with a kitchen knife were obtained by using a 3D motion capture system. The relationship between the perpetrator's sex-victim's position, the perpetrator's sex-slashing location, and anthropometric parameters and the distance and space required for the slashing were analyzed by two-factor repeated measures ANOVA and Pearson correlation analysis respectively.
Objective: In this systematic review and meta-analysis, we aimed to investigate the effect of oral simethicone (SIM), an antifoaming agent, on the quality of colonoscopy in terms of bowel preparation quality, adenoma or polyp detection rate (ADR/PDR) and cecal intubation rate (CIR).
Methods: All randomized controlled trials (RCTs) on the use of SIM during bowel preparation for colonoscopy published up to 17 March 2021 were identified from the PubMed, EMBASE and Cochrane Library databases. Bowel preparation quality, ADR/PDR/CIR, cecal intubation time (CIT), withdrawal time (WT), patients' tolerability, acceptability and volume of foam and bubbles were compared between the SIM and non-SIM groups.
Action assessment, the process of evaluating how well an action is performed, is an important task in human action analysis. Action assessment has experienced considerable development based on visual cues; however, existing methods neglect to adaptively learn different architectures for varied types of actions and are therefore limited in achieving high-performance assessment for each type of action. In fact, every type of action has specific evaluation criteria, and human experts are trained for years to correctly evaluate a single type of action.
View Article and Find Full Text PDFReaction-time variability is a critical index of sustained attention. However, researchers still lack effective measures to establish the association between neurophysiological activity and this behavioral variability. Here, the present study recorded reaction time (RT) and cortical electroencephalogram (EEG) in healthy subjects when they continuously performed an alternative responding task.
View Article and Find Full Text PDFZhen Ci Yan Jiu
December 2019
Compared with acupuncture research, moxibustion research has made slow progress with great obstacles. With randomized controlled trials as the widely accepted gold standard for the evaluation of clinical effect, moxibustion therapy is facing a great challenge: how to establish a reasonable placebo control group. This article reviewed the current application of placebo moxibustion, analyzed the difficulties in setting up placebo moxibustion, and explored corresponding solutions, in order to attract more attention to moxibustion therapy among traditional Chinese medicine practitioners.
View Article and Find Full Text PDFComb Chem High Throughput Screen
July 2019
Guang Pu Xue Yu Guang Pu Fen Xi
June 2016
As the polarization characteristics are the physical property determined by the material itself, its corresponding polarization image contains abundant target’s information. Using polarization information to identify the target is always a hot research topic in the field of the target detection. Active polarization imaging has more advantages compared with passive polarization imaging because of its high signal-to-noise ratio and good controllability.
View Article and Find Full Text PDFDue to the increasing prevalence of multidrug-resistant Mycobacterium tuberculosis, there is an urgent need for new antituberculosis drugs that have novel mechanisms of action. As part of our ongoing search for antimycobacterial metabolites from mangrove endophytes, chemical analysis of the active extract of a strain of Fusarium sp. was performed, which led to the isolation of fusaric acid as the predominant constituent.
View Article and Find Full Text PDFThree new bianthraquinone derivatives, alterporriol K (1), L (2) and M (3), along with six known compounds were obtained from extracts of the endophytic fungus Alternaria sp. ZJ9-6B, isolated from the mangrove Aegiceras corniculatum collected in the South China Sea. Their structures were elucidated by one- and two-dimensional NMR spectroscopy, MS data analysis and circular dichroism measurements.
View Article and Find Full Text PDFWe previously reported the isolation of Cu-fusaric acid (Cu-FA) complex from the mangrove endophyte Fusarium oxysporum ZZF51. In this study, we explored the mechanism of Cu-FA production in the strain ZZF51 by comparing with that of another endophyte Fusarium sp. B2, which produced FA but not Cu-FA in the same culture condition.
View Article and Find Full Text PDFA new pyrrolyl 4-quinolinone alkaloid with an unprecedented ring system, named penicinoline (1) was isolated from a mangrove endophytic fungus. The structure of 1 was elucidated by spectroscopic methods and comparison with its derivative, penicinotam (1a), an unexpected lactam that was obtained from 1 by intramolecular dehydration. The structure of 1a was unambiguously confirmed by single-crystal X-ray analysis.
View Article and Find Full Text PDFBackground: The aim of this study was to evaluate a visible simulation surgery technique for choosing the best surgical plan in patients with intrahepatic calculi.
Methods: A medical image processing system was used to process computed tomography (CT) scanning data collected from four cases of intrahepatic calculi. Models of liver and bile ducts in standard template library format were processed by a free-form modeling system and reconstructed three-dimensionally.
Objective: To study the clinical application of digital medical in the operation on primary liver cancer.
Methods: The patients (n=11) with primary hepatic carcinoma treated between February and July 2008, including 9 cases of hepatocellular carcinoma, 2 cases of cholangiocellular carcinoma, were scanned using 64 slices helicon computerized tomography (CT) and the datasets was collected. Segment and three-dimensional (3D) reconstruction of the CT image was carried out by the medical image processing system which was developed.
Zhonghua Wai Ke Za Zhi
February 2009
Objective: To investigate the significance of three dimensional visualization and virtual surgery system in living related donor liver transplantation surgery.
Methods: Two patients suffered biliary calculi were scanned by 64 slice helical computer tomography (CT) on livers and the data were imported into medical image proceeding system (MIPS) for sequence. Man-made segmentation and true-up on the image from the data were carried out.
Zhonghua Wai Ke Za Zhi
July 2008
Objective: To study the three-dimensional (3D) reconstruction and the visualization simulation surgery of spleen based on the scanning data of 64-slice helical computed tomograph (CT).
Methods: The original data of 64-slice helical CT of spleen was collected, and then the CT image sequences were segmented and automatically extracted using auto-adapted region growth algorithm, and were conducted with the segmented images by adopt self-developed image processing software for 3D reconstruction. Finally, the 3D models were imported into FreeForm Modeling System for modifying and smooth.
J Asian Nat Prod Res
November 2008
A new hTopo I isomerase inhibitor, (+)-3,3',7,7',8,8'-hexahydroxy-5,5'-dimethylbianthraquinone (2240A), was isolated from the mangrove endophytic fungus no. 2240 collected from an estuarine mangrove at the South China Sea coast. Its structure was elucidated by spectral analyses including two-dimensional NMR, HR-EI-MS, IR, and UV.
View Article and Find Full Text PDFObjective: To assess the feasibility of visual-reality technique for simulating surgical resection of pancreatic tail carcinoma using a 3-dimensional pancreas model reconstructed on the basis of the CT data.
Methods: The original image data of 64-slice spiral CT was obtained from a patient with pancreatic tail carcinoma. Using adaptive region growing algorithm, the serial CT images were segmented and automatically extracted for 3-dimensional reconstruction of the pancreas and the anatomically related structures with a self-designed program.
Nan Fang Yi Ke Da Xue Xue Bao
March 2008
Objective: To study the clinical value of 3-dimensional (3D) reconstruction of the liver and its ductal structures using 64-slice spiral CT data in hepatobiliary surgery.
Methods: The image data of 64-slice spiral CT scanning was obtained from patients with biliary calculi. Image segmentation was performed both using computer programs and manually, and 3D reconstruction of the liver was carried out using Mimics software.