Microneedle array(MNA)electrodes are an effective solution to achieve high-quality surface biopotential recording without the coordination of conductive gel and are thus very suitable for long-term wearable applicatio...Microneedle array(MNA)electrodes are an effective solution to achieve high-quality surface biopotential recording without the coordination of conductive gel and are thus very suitable for long-term wearable applications.Existing schemes are limited by flexibility,biosafety,and manufacturing costs,which create large barriers for wider applications.Here,we present a novel flexible MNA electrode that can simultaneously achieve flexibility of the substrate to fit a curved body surface,robustness of microneedles to penetrate the skin without fracture,and a simplified process to allow mass production.The compatibility with wearable wireless systems and the short preparation time of the electrodes significantly improves the comfort and convenience of electrophysiological recording.The normalized electrode–skin contact impedance reaches 0.98 kΩcm^(2)at 1 kHz and 1.50 kΩcm^(2)at 10 Hz,a record low value compared to previous reports and approximately 1/250 of the standard electrodes.The morphology,biosafety,and electrical/mechanical properties are fully characterized,and wearable recordings with a high signal-to-noise ratio and low motion artifacts are realized.The first reported clinical study of microneedle electrodes for surface electrophysiological monitoring was conducted in tens of healthy and sleep-disordered subjects with 44 nights of recording(over 8 h per night),providing substantial evidence that the electrodes can be leveraged to substitute for clinical standard electrodes.展开更多
Robot Application and Adjustment of Export Product Scope:Can We Have Both Efficiency and Quality?Jianhong Qi,Zhitong Zhang Based on the matching data of China Industrial Enterprise Database and China Customs Database ...Robot Application and Adjustment of Export Product Scope:Can We Have Both Efficiency and Quality?Jianhong Qi,Zhitong Zhang Based on the matching data of China Industrial Enterprise Database and China Customs Database from 2000 to 2015,this paper examines the infuence of robot application(RA)on the export product scope(EPS)of multi-product enterprises(MPEs),the influence channels,and the export competition strategies of these enterprises.The research results show that RA has promoted the expansion of EPS of MPEs,and this promotion effect is prominent especially for the export of laborintensive products,resource-intensive products and for non-state-owned enterprises(SOEs).The adjustment of EPS by RA not only enhances efficiency through productivity improvement effect and cost-saving effect,but also improves quality through emission-reduction effect and product quality effect,which is very obvious in long-quality-ladder enterprises.The RA-expanded product scope covers both old products and new products manufactured in the same industry.Facing fierce competition in the same industry,robot-using enterprises prefer quality competition strategy,which further promotes the expansion of EPS.展开更多
Background:Tuberculosis(TB)is a major global health threat and the leading infectious disease cause of death worldwide.Access to and retention in TB care remains a challenge for patients,particularly those living in r...Background:Tuberculosis(TB)is a major global health threat and the leading infectious disease cause of death worldwide.Access to and retention in TB care remains a challenge for patients,particularly those living in rural and remote settings.This qualitative study explored barriers and facilitators to accessing and maintaining contact with TB care services in communities in Xigaze(Shigatse)prefecture,Xizang Autonomous Region(Tibet Autonomous Region),China from the perspective of persons impacted by TB.Methods:We conduced in-depth interviews with 23 participants impacted by TB in four rural districts in Xigaze prefecture,Xizang Autonomous Region,China between April 2019 and November 2020.Interviews were conducted in Tibetan and Mandarin,transcribed in Mandarin and translated into English.Transcripts were checked against recordings by native Tibetan and Mandarin speakers.QSR NVivo12 software was used for framework analysis guided by an access to care conceptual framework by Levesque et al.Results:Overall patients reported low awareness of and an indiferent attitude towards TB,although all reported understanding the need to adhere to treatment.Participants reported complex pathways to care,often requiring visits to multiple healthcare facilities.Some participants reported visiting traditional Tibetan medicine(TTM)providers.Participants reported various barriers to accessing care including challenges physically reaching care,out-of-pocket payments for tests,diagnostics and transport.Barriers to maintaining care included medication side efects and worry about treatment efectiveness.Enablers to accessing care identifed included knowledge or past experience with TB,integrated models of TTM and western care,supportive village doctors who conducted home visits,free TB treatment and other subsidies,as well as having family support with care and social support as barriers and facilitators to maintaining treatment.Conclusions:We identifed barriers and facilitators to accessing services in rural communities in Xigaze from the perspective of persons impacted by TB.Challenges include complex pathways to care,travel distances,wait times and low awareness.Tuberculosis care in the region could be strengthened by ongoing culturally tailored educational campaigns to increase awareness,partnerships with TTM providers,providing comprehensive treatment subsidies and strengthening the role of family members in comprehensive TB care.展开更多
基金supported by the China Capital Health Research and Development of Special (No. 2018-14111)the National Natural Science Foundation of China (grant No. 62004007 and No. 82027805)the China Postdoctoral Science Foundation Grant (No. 2021M700258)
文摘Microneedle array(MNA)electrodes are an effective solution to achieve high-quality surface biopotential recording without the coordination of conductive gel and are thus very suitable for long-term wearable applications.Existing schemes are limited by flexibility,biosafety,and manufacturing costs,which create large barriers for wider applications.Here,we present a novel flexible MNA electrode that can simultaneously achieve flexibility of the substrate to fit a curved body surface,robustness of microneedles to penetrate the skin without fracture,and a simplified process to allow mass production.The compatibility with wearable wireless systems and the short preparation time of the electrodes significantly improves the comfort and convenience of electrophysiological recording.The normalized electrode–skin contact impedance reaches 0.98 kΩcm^(2)at 1 kHz and 1.50 kΩcm^(2)at 10 Hz,a record low value compared to previous reports and approximately 1/250 of the standard electrodes.The morphology,biosafety,and electrical/mechanical properties are fully characterized,and wearable recordings with a high signal-to-noise ratio and low motion artifacts are realized.The first reported clinical study of microneedle electrodes for surface electrophysiological monitoring was conducted in tens of healthy and sleep-disordered subjects with 44 nights of recording(over 8 h per night),providing substantial evidence that the electrodes can be leveraged to substitute for clinical standard electrodes.
基金the major project(17ZDA040)of National Social Science Fundthe major project(72192842)of National Natural Science Foundation for their support.
文摘Robot Application and Adjustment of Export Product Scope:Can We Have Both Efficiency and Quality?Jianhong Qi,Zhitong Zhang Based on the matching data of China Industrial Enterprise Database and China Customs Database from 2000 to 2015,this paper examines the infuence of robot application(RA)on the export product scope(EPS)of multi-product enterprises(MPEs),the influence channels,and the export competition strategies of these enterprises.The research results show that RA has promoted the expansion of EPS of MPEs,and this promotion effect is prominent especially for the export of laborintensive products,resource-intensive products and for non-state-owned enterprises(SOEs).The adjustment of EPS by RA not only enhances efficiency through productivity improvement effect and cost-saving effect,but also improves quality through emission-reduction effect and product quality effect,which is very obvious in long-quality-ladder enterprises.The RA-expanded product scope covers both old products and new products manufactured in the same industry.Facing fierce competition in the same industry,robot-using enterprises prefer quality competition strategy,which further promotes the expansion of EPS.
基金funded by TB REACH,a special initiative of Stop TB Partnership(Grant Number:STBP/TBREACH/GSA/W6–5).
文摘Background:Tuberculosis(TB)is a major global health threat and the leading infectious disease cause of death worldwide.Access to and retention in TB care remains a challenge for patients,particularly those living in rural and remote settings.This qualitative study explored barriers and facilitators to accessing and maintaining contact with TB care services in communities in Xigaze(Shigatse)prefecture,Xizang Autonomous Region(Tibet Autonomous Region),China from the perspective of persons impacted by TB.Methods:We conduced in-depth interviews with 23 participants impacted by TB in four rural districts in Xigaze prefecture,Xizang Autonomous Region,China between April 2019 and November 2020.Interviews were conducted in Tibetan and Mandarin,transcribed in Mandarin and translated into English.Transcripts were checked against recordings by native Tibetan and Mandarin speakers.QSR NVivo12 software was used for framework analysis guided by an access to care conceptual framework by Levesque et al.Results:Overall patients reported low awareness of and an indiferent attitude towards TB,although all reported understanding the need to adhere to treatment.Participants reported complex pathways to care,often requiring visits to multiple healthcare facilities.Some participants reported visiting traditional Tibetan medicine(TTM)providers.Participants reported various barriers to accessing care including challenges physically reaching care,out-of-pocket payments for tests,diagnostics and transport.Barriers to maintaining care included medication side efects and worry about treatment efectiveness.Enablers to accessing care identifed included knowledge or past experience with TB,integrated models of TTM and western care,supportive village doctors who conducted home visits,free TB treatment and other subsidies,as well as having family support with care and social support as barriers and facilitators to maintaining treatment.Conclusions:We identifed barriers and facilitators to accessing services in rural communities in Xigaze from the perspective of persons impacted by TB.Challenges include complex pathways to care,travel distances,wait times and low awareness.Tuberculosis care in the region could be strengthened by ongoing culturally tailored educational campaigns to increase awareness,partnerships with TTM providers,providing comprehensive treatment subsidies and strengthening the role of family members in comprehensive TB care.
