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Load-reducing backpack powers electronics by harvesting energy from walking

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IMAGE: A prototype backpack harvests energy from walking to power small electronics, and it makes loads feel lighter.
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Credit: Adapted from
2021, DOI: 10.1021/acsnano.0c07498
Hikers, soldiers and school children all know the burden of a heavy backpack. But now, researchers have developed a prototype that not only makes loads feel about 20% lighter, but also harvests energy from human movements to power small electronics. The new backpack, reported in
ACS Nano, could be especially useful for athletes, explorers and disaster rescuers who work in remote areas without electricity, the researchers say.
Backpacks are widely used in everyday life for the hands-free carrying of loads. Over time, however, walking or running with a heavy sack can cause back and neck pain. Also, backpackers in wilderness areas (or even those in cities who don t have ready access to a charger) might wish for a bag that could harvest the mechanical ener ....

United States , Jia Cheng , Zhong Lin Wang , Us Congress , National Natural Science Foundation Of China , National Science , Development Program Of China , American Chemical Society , Tsinghua University Initiative Scientific Research Program , National Key Research , Technology Major Project Of China , Lin Wang , National Natural Science Foundation , Technology Major Project , Development Program , ஒன்றுபட்டது மாநிலங்களில் , ஜியா செங் , ஜாங் லின் வாங் , எங்களுக்கு காங்கிரஸ் , தேசிய இயற்கை அறிவியல் அடித்தளம் ஆஃப் சீனா , தேசிய அறிவியல் , வளர்ச்சி ப்ரோக்ர்யாம் ஆஃப் சீனா , அமெரிக்கன் இரசாயன சமூகம் , தேசிய விசை ஆராய்ச்சி , தொழில்நுட்பம் முக்கிய ப்ராஜெக்ட் ஆஃப் சீனா , லின் வாங் ,

Pancreatic β cell-derived exosomal miR-29 family enhances hepatic glucose output

In a new study published in
Journal of Extracellular Vesicles, Chen-Yu Zhang s group at Nanjing University, School of Life Sciences, and Antonio Vidal-Puig s group at University of Cambridge report that pancreatic β cells secrete miR-29 family members (miR-29s) via exosomes in response to high levels of free fatty acids (FFAs). Theses β cell-derived exosomal miR-29s regulate glucose homeostasis through their manipulations on glucose output in liver.
Previously, Chen-Yu Zhang s group identified extracellular miRNA as a new form of cell-to-cell communication. They are among the first that reported the selective secretion of miRNAs under different physiological or pathological states; also, the uptake and function of secreted miRNAs in recipient cells. In the past decade, intensive studies have revealed the role of extracellular miRNAs in a range of biological processes. Thus, as a newly-emerged secretory factor, more insightful studies are needed to further reveal its re ....

Jing Li , United Kingdom , Xiang Zhang , Junfeng Zhang , Antonio Vidal Puig , Dameng Li , Eunyoung Lee , Shibei Wang , Chen Yu Zhang , Xiaohong Jiang , Yuchen Liu , Xin Dai , Mingliang Zhang , Yujing Zhang , Weiping Jia , Century Excellent Talents In University , National Basic Research Program Of China , Institute Of Life Sciences , Key Laboratory Of Pharmaceutical Biotechnology , National Science Fund For Distinguished Young Scholars , University Of Cambridge , Program No , Drum Tower Hospital Center , Research Funds For The Central Universities , Natural Science Foundation Of Jiangsu Province , Ministry Of Education ,

Reverse engineering 3D chromosome models for individual cells

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IMAGE: A new computational technique that uses heat map data to reverse engineer highly detailed models of chromosomes and researchers have uncovered new information about the close spatial relationships that chromatin.
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Credit: UIC
Genome analysis can provide information on genes and their location on a strand of DNA, but such analysis reveals little about their spatial location in relation to one another within chromosomes the highly complex, three-dimensional structures that hold genetic information.
Chromosomes resemble a fuzzy X in microscopy images and can carry thousands of genes. They are formed when DNA winds around proteins called histones which are further folded into complexes called chromatin, which make up individual chromosomes. ....

United States , Qiu Sun , Jie Liang , Daniel Czajkowsky , Zhifeng Shao , Alan Perez Rathke , Shanghai Jiao Tong University , Nature Communications , University Of Illinois Chicago , National Institutes Of Health , National Key Research , Development Program Of China , Illinois Chicago , Loan Hill Professor , Development Program , National Institutes , Cell Biology , Medicine Health , Technology Engineering Computer Science , Gene Therapy , ஒன்றுபட்டது மாநிலங்களில் , கீயூ சூரியன் , ஜிே லியாங் , ஆலன் பெரெஸ் ரதிகெ , ஷாங்காய் ஜியாவோ நாக்கு பல்கலைக்கழகம் , இயற்கை தகவல்தொடர்புகள் ,

The compound that makes chili peppers spicy also boosts perovskite solar cell performance

Credit: Jin Yang
Scientists in China and Sweden have determined that a pinch of capsaicin, the chemical compound that gives chili peppers their spicy sting, may be a secret ingredient for more stable and efficient perovskite solar cells. The research, published January 13 in the journal
Joule, determined that sprinkling capsaicin into the precursor of methylammonium lead triiodide (MAPbI3) perovskite during the manufacturing process led to a greater abundance of electrons (instead of empty placeholders) to conduct current at the semiconductor s surface. The addition resulted in polycrystalline MAPbI3 solar cells with the most efficient charge transport to date.
In the future, green and sustainable forest-based biomaterial additive technology will be a clear trend in non-toxic lead-free perovskite materials, says Qinye Bao, a senior author of the study from East China Normal University. We hope this will eventually yield a fully green perovskite solar cell for a cle ....

Qinye Bao , National Science Foundation Of China , National Natural Science Foundation Of China , China Normal University , National Key Research , Research Funds For The Central Universities , China Normal University Multifunctional Platform For Innovation , Development Program Of China , East China Normal , National Science Foundation , Fundamental Research Funds , Central Universities , Shanghai Rising Star , Swedish Government Strategic Research Area , Materials Science , Functional Materials , Development Program , National Natural Science Foundation , Cell Press , Chemistry Physics Materials Sciences , Energy Fuel Non Petroleum , Superconductors Semiconductors , Electrical Engineering Electronics , தேசிய அறிவியல் அடித்தளம் ஆஃப் சீனா , தேசிய இயற்கை அறிவியல் அடித்தளம் ஆஃப் சீனா , சீனா சாதாரண பல்கலைக்கழகம் ,

Covid-19: 76% of Hospitalized Patients Reported Symptoms 6 Months Later

Jan 13, 2021
Fatigue and muscle weakness were reported most often
More than three-quarters of Covid-19 patients who required hospitalization had related health issues 6 months after SARS-CoV-2 infection in a study of more than 1,700 early patients from Wuhan, China.
In all, 76% of patients reported at least one symptom 6 months after hospitalization, with women more likely than men to report ongoing health issues. Fatigue or muscle weakness were the most common lingering symptoms, reported in 63% of the patients followed for a median of 186 days. Sleep difficulties, anxiety, and depression were also commonly reported.
The follow-up also revealed significantly lower antibodies against Covid-19 at 6 months, compared to those observed during acute illness, raising concerns about SARS-CoV-2 reinfection in patients who have had the disease. ....

Jin Yin Tan , Giuseppe Remuzzi , Psalynn Boyles , Chaolin Huang , Giussepe Remuzzi , Boehringer Ingelheim Inception Sciences Canada , National Natural Science Foundation Of China , National Key Research , Chinese Academy Of Medical Sciences , Alexion Pharmaceuticals Inc , Mario Negri Institute For Pharmacological Research , Development Program Of China , Jin Yin Tan Hospital , Mario Negri Institute , Pharmacological Research , Contributing Writer , National Natural Science Foundation , Chinese Academy , Medical Sciences , Development Program , Janssen Pharmaceutical , Akebia Therapeutics , Boehringer Ingelheim , Inception Sciences Canada , Catalyst Biosciences , ஜின் யின் பழுப்பு ,