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Soft, thin skin-mounted power management systems and their use in wireless thermography
Lee, Jung Woo,Xu, Renxiao,Lee, Seungmin,Jang, Kyung-In,Yang, Yichen,Banks, Anthony,Yu, Ki Jun,Kim, Jeonghyun,Xu, Sheng,Ma, Siyi,Jang, Sung Woo,Won, Phillip,Li, Yuhang,Kim, Bong Hoon,Choe, Jo Young,Huh National Academy of Sciences 2016 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.113 No.22
<P>Power supply represents a critical challenge in the development of body-integrated electronic technologies. Although recent research establishes an impressive variety of options in energy storage (batteries and supercapacitors) and generation (triboelectric, piezoelectric, thermoelectric, and photovoltaic devices), the modest electrical performance and/or the absence of soft, biocompatible mechanical properties limit their practical use. The results presented here form the basis of soft, skin-compatible means for efficient photovoltaic generation and high-capacity storage of electrical power using dual-junction, compound semiconductor solar cells and chip-scale, rechargeable lithium-ion batteries, respectively. Miniaturized components, deformable interconnects, optimized array layouts, and dual-composition elastomer substrates, superstrates, and encapsulation layers represent key features. Systematic studies of the materials and mechanics identify optimized designs, including unusual configurations that exploit a folded, multilayer construct to improve the functional density without adversely affecting the soft, stretchable characteristics. System-level examples exploit such technologies in fully wireless sensors for precision skin thermography, with capabilities in continuous data logging and local processing, validated through demonstrations on volunteer subjects in various realistic scenarios.</P>
Kim, S.T.,Banks, K.C.,Pectasides, E.,Kim, S.Y.,Kim, K.,Lanman, R.B.,Talasaz, A.,An, J.,Choi, M.G.,Lee, J.H.,Sohn, T.S.,Bae, J.M.,Kim, S.,Park, S.H.,Park, J.O.,Park, Y.S.,Lim, H.Y.,Kim, N.K.D.,Park, W. Elsevier 2018 Annals of oncology Vol.29 No.4
<P>Conclusions: The present study showed that HER2+GC patients respond differently according to concomitant genomic aberrations beyond ERBB2, high ERBB2 amplification by NGS or cfDNA can be a positive predictor for patient selection, and tumor genomic alterations change significantly during targeted agent therapy.</P>
( Sanggyun Kim ),( Soyoung Lee ),( Doosup Kim ),( Junseop Yeom ),( Sae Yong Lee ),( Scott A. Banks ) 한국체육학회 2019 International journal of human movement science Vol.13 No.2
We aimed to identify 3D motion differences in knee joint articular surface kinematics in healthy young and old participants during weight-bearing knee flexion. Twelve healthy male volunteers, six in their 60s and six in their 20s, without any musculoskeletal system disease involving the knees participated. 3D bone models of the femur and tibia were obtained using CT and matched into the fluoroscopic images captured during split squatting. Translation and rotation of the tibia to the femur during weight-bearing flexion were compared between the groups. Translation of the nearest medial-lateral articular surface location and rotational angle of medial-lateral connecting lines were also compared. As the tibial internal-external rotation angle and medial contact point anterior-posterior translation were significantly correlated between the groups, they could not represent the characteristics of age-related changes. Similar to lateral contact point translation and contact points line angles were significantly different during the initial 10° flexion period. At the 40°-45° knee flexion period, a significant difference was detected in the contact point line angle and in the tibial superior-inferior translation. 3D knee joint kinematic differences between participants in their 20s and 60s, especially during initial and 40°-45° periods, can predict kinematic effects on age-related disease.
강릉지방의 오징어 식해 개발에 관한 연구 -3. 식해 숙성중 품질에 미치는 마늘 첨가량의 영향-
김상무,백운두,이근태,KIM Sang-Moo,BANK Oon-Doo,LEE Keun-Tai 한국수산과학회 1994 한국수산과학회지 Vol.27 No.4
마늘 첨가량을 달리하였을 경우 숙성기간에 따른 오징어 식해의 성분 및 미생물 변화를 측정한 결과는 다음과 같다. 식해 숙성중의 일반성분에 대한 마늘의 영향은 거의 없었으며 pH는 마늘농도 $2\%$와 $3\%$ 사이에는 별 차이가 없었지만 $4\%$ 마늘농도에서는 숙성초기를 제외하고는 마늘농도 $2\%$ 및 $3\%$ 보다 낮은 값을 나타내었다. Lactic acid 량은 $4\%$ 마늘농도에서 $2\%$ 및 $3\%$보다 숙성초기에 많이 생성되었으며 숙성후기에 그 차이는 상당히 줄어들었다. 총 arginine 량 변화에 마늘의 영향은 거의 없었으며 아미노태 질소량은 숙성 초기에는 마늘농도가 증가할수록 낮은 값을 나타내었다. TMAO는 숙성초기에 급격하게 감소하였으며 $2\%$ 및 $3\%$ 농도에는 큰 차이는 없었으나 $4\%$ 농도는 숙성기간이 증가함에 따라 감소비율이 상대적으로 낮았다. TMA 량은 숙성초기에 급격하게 증가하였으나 마늘농도에 따른 차이는 거의 없었으며 숙성 후기에 $2\%$ 마늘농도에서 $3\%$ 및 $4\%$ 농도보다 많이 생성되었다. 미생물 변화를 살펴보면 총균수 및 fungi는 마늘농도가 증가함에 따라 균수는 적었으나 숙성말기에는 그 차이는 크지 않았다. Lactic acid bacteria는 숙성 0일에는 마늘농도가 증가함에 따라 균수가 적었으나 숙성기간 5일 이후로는, 마늘농도가 증가함에 따라 현저한 차이를 나타내었으나 숙성기간이 증가할수록 그 차이는 줄어들었다. Proteolytic bacteria, psychrotroph 및 fungi는 숙성 0일에는 마늘농도가 증가함에 따라 균수는 적었으나, 숙성기간이 증가할수록 균수는 증가하였으며, 숙성말기에 더 큰 감소경향을 나타내었다. The effects of garlic concentrations on the properties of squid sik-hae such as the chemical and microbial changes were investigated. pH, the amounts of lactic acid showed significant differences at early stages of fermentation and no significant differences at later stages with increasing garlic concentrations. The amount of TMAO decreased with increasing storage periods and garlic concentrations, whereas that of TMA increased significantly at early stages of fermentation and showed no significant differences with increasing garlic concentrations. At later stages of fermentation, the amount of TMA at $2\%$ garlic concentration was higher than those at 3 and $4\%$. The number of lactic acid bacteria increased significantly garlic concentrations at early stages of storage and had no significant differences at later stages. The numbers of proteolytic bacteria, psychrotroph, and fungi increased in proportion to length of storage and garlic concentrations at early stages of storage whereas, the number of bacteria decreased significantly at later stages of storage with increasing garlic concentrations.
Protective System from Medical Needle-sticks. Part I: Background and System Development
Turner, LaDawnya C.,Seyam, Abdelfattah M.,Banks-Lee, Pamela The Korean Fiber Society 2003 Fibers and polymers Vol.4 No.2
Previous research on healthcare workers’ protection has concentrated on liquid barrier protection by providing impermeable personal articles such as latex gloves. This property is of high importance but since most blood-borne pathogen transmissions in the healthcare industry are caused by needle-stick injuries, protection from sharp invasive instruments should also be of high concern. And since latex and alike provide no protection against needle-stick injuries, new protective systems need to be developed and evaluated. This part of the study provides a review regarding the current practice of protection and the serious problems that arise from needle-flick injuries. Additionally, the development of new protective system is described. In part II of the study, evaluation of the new system will be provided.
A soft, wearable microfluidic device for the capture, storage, and colorimetric sensing of sweat
Koh, Ahyeon,Kang, Daeshik,Xue, Yeguang,Lee, Seungmin,Pielak, Rafal M.,Kim, Jeonghyun,Hwang, Taehwan,Min, Seunghwan,Banks, Anthony,Bastien, Philippe,Manco, Megan C.,Wang, Liang,Ammann, Kaitlyn R.,Jang, American Association for the Advancement of Scienc 2016 Science Translational Medicine Vol.8 No.366
<P>Capabilities in health monitoring enabled by capture and quantitative chemical analysis of sweat could complement, or potentially obviate the need for, approaches based on sporadic assessment of blood samples. Established sweat monitoring technologies use simple fabric swatches and are limited to basic analysis in controlled laboratory or hospital settings. We present a collection of materials and device designs for soft, flexible, and stretchable microfluidic systems, including embodiments that integrate wireless communication electronics, which can intimately and robustly bond to the surface of the skin without chemical and mechanical irritation. This integration defines access points for a small set of sweat glands such that perspiration spontaneously initiates routing of sweat through a microfluidic network and set of reservoirs. Embedded chemical analyses respond in colorimetric fashion to markers such as chloride and hydronium ions, glucose, and lactate. Wireless interfaces to digital image capture hardware serve as a means for quantitation. Human studies demonstrated the functionality of this microfluidic device during fitness cycling in a controlled environment and during long-distance bicycle racing in arid, outdoor conditions. The results include quantitative values for sweat rate, total sweat loss, pH, and concentration of chloride and lactate.</P>