AHP-based design method of a lightweight, portable and flexible air-based PV-T module for UAV shelter hangars

The use of renewable energy is spreading also to the military field. Its implementation in army forward bases has three clear advantages: an economic benefit lowering consumptions, an environmental profit reducing emissions, and a strategic interest minimizing risks in supplies. This paper presents a methodology for the design of a photovoltaic-thermal system (PV-T) to supply heat and electricity to military tents in forward facilities. UAV shelter hangars used by infantry forces have been chosen to implement this equipment. Analytic Hierarchy Process (AHP) has been chosen to explain its application to designing the PV-T system. A CFD analysis of different design alternatives was performed in order to quantify decision making criteria and subcriteria. The best performance design was used to build a test bench of the system, using an Arduino-based platform. Telemetry is used to remotely register PV-T module parameters. Experimental data obtained was implemented as boundary conditions to validate the CFD model of the PV-T system, and heat exchange models were implemented using UDF (user defined functions) in ANSYS® FLUENT®. A making decision method was successfully applied to define a methodology for geometrical design, using CFD simulation to determine necessary parameters to quantify criteria and subcriteria defined in the AHP

20230513 Real-time ultrasound feedback of transversus abdominis muscle activation on postpartum diastasis recti abdminis http://zglcyj.ijournals.cn/zglcyj/ch/reader/create_pdf.aspx?file_no=20230513 10.13429/j.cnki.cjcr.2023.05.013 LIN Jun*, SONG Chengxian, QUE Kexin, CEN Wanyi, WANG Runmei, ZHANG Jiayong, LIU Gang *Department of Rehabilitation Medicine, Nanfang Hospital of Southern Medical University, Guangzhou, Guangdong 510515, China Objective To observe the effect of abdominal hollowing exercise (AHE) through real-time ultrasound imaging feedback on transverse abdominis (TrA) muscle activation and diastasis recti abdominis (DRA) after postpartum. Methods From December 2021 to July 2022, 62 patients with DRA more than 20 mm treated in the Third Affiliated Hospital of Guangzhou Medical University were selected and randomly divided into experimental group and control group. The real-time ultrasound imaging feedback for AHE was performed in experimental group, and conventional feedback for AHE was given in control group. The treatment lasted for four weeks in both groups. Before treatment and after 2 weeks and 4 weeks of treatment, the abdominal circumference (AC) was measured, and the abdominal muscle thickness and inter-recti distance(IRD) were measured by high-frequency ultrasound to calculate AC difference and the activation degree of TrA muscle. Results Compared with those in control group, the activation degree of TrA muscle significantly increased, and AC reduced in experimental group after 2 weeks of treatment (P＜0.05). Compared with those in control group, in experimental group, IRD became smaller ［（18.02±4.82）mm vs (20.36±4.13）mm, P＜0.05］, and the static TrA muscle thickness ［(3.21±0.59)mm vs (2.91±0.51)mm, P＜0.05］ and the dynamic TrA muscle thickness ［(5.16±0.86)mm vs (4.54±0.70)mm, P＜0.05］ significantly increased after 4 weeks of treatment. Conclusions AHE based on real-time ultrasound feedback can promote the activation of TrA muscle and an increase in thickness of TrA muscle, which may be conducive to the recovery of the postpartum patients with diastasis recti abdominis. Postpartum rehabilitation, Diastasis recti abdominis, Transverse abdominis muscle, Real-time ultrasound feedback, Abdominal hollowing exercise, Iner-recti distance 698 703 2022-08-08 2023-05-20 Real-time ultrasound feedback of transversus abdominis muscle activation on postpartum diastasis recti abdminis

Objective To observe the effect of abdominal hollowing exercise (AHE) through real-time ultrasound imaging feedback on transverse abdominis (TrA) muscle activation and diastasis recti abdominis (DRA) after postpartum. Methods From December 2021 to July 2022, 62 patients with DRA more than 20 mm treated in the Third Affiliated Hospital of Guangzhou Medical University were selected and randomly divided into experimental group and control group. The real-time ultrasound imaging feedback for AHE was performed in experimental group, and conventional feedback for AHE was given in control group. The treatment lasted for four weeks in both groups. Before treatment and after 2 weeks and 4 weeks of treatment, the abdominal circumference (AC) was measured, and the abdominal muscle thickness and inter-recti distance(IRD) were measured by high-frequency ultrasound to calculate AC difference and the activation degree of TrA muscle. Results Compared with those in control group, the activation degree of TrA muscle significantly increased, and AC reduced in experimental group after 2 weeks of treatment (P＜0.05). Compared with those in control group, in experimental group, IRD became smaller ［（18.02±4.82）mm vs (20.36±4.13）mm, P＜0.05］, and the static TrA muscle thickness ［(3.21±0.59)mm vs (2.91±0.51)mm, P＜0.05］ and the dynamic TrA muscle thickness ［(5.16±0.86)mm vs (4.54±0.70)mm, P＜0.05］ significantly increased after 4 weeks of treatment. Conclusions AHE based on real-time ultrasound feedback can promote the activation of TrA muscle and an increase in thickness of TrA muscle, which may be conducive to the recovery of the postpartum patients with diastasis recti abdominis

The anaphase promoting complex impacts repair choice by protecting ubiquitin signalling at DNA damage sites

Double-strand breaks (DSBs) are repaired through two major pathways, homology-directed recombination (HDR) and non-homologous end joining (NHEJ). While HDR can only occur in S/G2, NHEJ can happen in all cell cycle phases (except mitosis). How then is the repair choice made in S/G2 cells? Here we provide evidence demonstrating that APCCdh1 plays a critical role in choosing the repair pathways in S/G2 cells. Our results suggest that the default for all DSBs is to recruit 53BP1 and RIF1. BRCA1 is blocked from being recruited to broken ends because its recruitment signal, K63-linked poly-ubiquitin chains on histones, is actively destroyed by the deubiquitinating enzyme USP1. We show that the removal of USP1 depends on APCCdh1 and requires Chk1 activation known to be catalysed by ssDNA-RPA-ATR signalling at the ends designated for HDR, linking the status of end processing to RIF1 or BRCA1 recruitment.We thank S.-Y. Lin (MD Anderson Cancer Center) for cell lines; J. Rosen (Baylor College of Medicine) for reagents; H. Masai (Tokyo Metropolitan Institute of Medical Science) for U2OS-Fucci cell line; D. Durocher (University of Toronto) for HeLa-Fucci cell line; E. Citterio (Netherlands Cancer Institute) for GFP-USP3 construct; M.S.Y. Huen (The University of Hong Kong) for RNF168 antibody. This work was performed with facilities and instruments in the Imaging Core of National Center for Protein Science (Beijing), the Cytometry and Cell Sorting Core at Baylor College of Medicine with funding from the NIH (P30 AI036211, P30 CA125123 and S10 RR024574), the Integrated Microscopy Core at Baylor College of Medicine with funding from the NIH (HD007495, DK56338 and CA125123), and the John S. Dunn Gulf Coast Consortium for Chemical Genomics. We also thank other members of the Zhang lab for helpful discussion and support. This work was supported in part by an international collaboration grant (# 2013DFB30210) and a 973 Project grant (# 2013CB910300) from Chinese Minister of Science and Technology, in part by a Chinese National Natural Science Foundation grant (# 81171920), in part by a grant from The Committee of Science and Technology of Beijing Municipality, China (# Z141100000214015), and in part by NIH grants CA116097 and CA122623 to P.Z. J.J. is supported by grants from National Institutes of Health (R01GM102529) and the Welch Foundation (AU-1711). S.H. is supported by grants (# 81272488 and 81472795) from Chinese National Natural Science Foundation. Y.Z. is supported by grants from the National Natural Scientific Foundation of China (No. 81430055), Programs for Changjiang Scholars and Innovative Research Team in University (No. IRT_15R13).S

Study on the construction deformation of a slotted shield in loess tunnels with different buried depths and large sections

Since there is no precedent for the use of slotted shield tunneling in the large section of high-speed railways in China, the relevant technological accumulation and systematic research achievements are few. Therefore, this paper provides theoretical support for loess tunnel construction decision-making through the study of slotted shields and is expected to promote the mechanization and even intelligent construction of a high-speed iron-loess tunnel. Taking the Luochuan tunnel of the Xiyan high-speed railway as the engineering background, this paper uses the numerical simulation software packages of ANSYS and FLAC3D to study the tunnel deformation (surface settlement, vault settlement, tunnel bottom uplift, and horizontal convergence) caused by the slotted shield construction in three different buried depths of 30, 40, and 50 m surrounding rock. The deformation law and mechanical characteristics of a cutter shield construction of large cross-section loess tunnels under the influence of different buried depths are put forward. Results showed that 1) the mutual interference between the working procedures can be significantly reduced by inserting the cutting tool into the soil instead of the advanced tubule before excavation; 2) the settlement in the upper part of the longitudinal axis of the tunnel is the largest; the greater the depth of the tunnel is, the smaller the surface settlement is; and 3) the horizontal deformation of the arch waist and foot of the tunnel under different buried depths is symmetrically distributed into the tunnel during the whole process of slotted shield tunneling