Results 61 to 70 of about 7,838 (225)

Tri‐WOB: A Bistability‐Driven Variable Stiffness Origami Structure for Soft Robotic Arms

open access: yesAdvanced Science, EarlyView.
Inherent bistability in Waterbomb origami enables the Tri‐WOB to switch between compliant and stiff states. By stacking multiple modules, the robotic arm maintains stiffness without continuous energy input while achieving large contraction, free morphing, and load‐bearing/transportation capability.
Lingchen Kong, Yaoyao Fiona Zhao
wiley   +1 more source

15N-Labelled Fertilizer Recovery by Sweet Sorghum in Mediterranean Climate

open access: yesItalian Journal of Agronomy, 2008
A 15N-labelled fertilization trial was carried out on sweet sorghum, grown in semi-arid environments of southern Europe with the aim to monitor the efficiency and effectiveness of the N-fertilisation technique under irrigation and different nitrogen ...
Michele Perniola   +3 more
doaj   +1 more source

Soil–plant retention dominated nitrogen fate from cattle excreta under low N input in a tropical pasture system

open access: yesFrontiers in Sustainable Food Systems
This study quantified ammonia (NH3) volatilization, nitrous oxide (N2O) emissions, and urinary nitrogen (N) mass balance across different pasture types in southeastern Brazil. Beef cattle excreta from Mixed pastures (Urochloa brizantha cv.
Israel Oliveira Ramalho   +10 more
doaj   +1 more source

Gerenciamento de resíduos químicos e águas servidas no laboratório de isótopos estáveis do CENA/USP Chemistry waste and residues waters management at the stable isotope laboratory of the CENA/USP

open access: yesQuímica Nova, 2003
A system for disposal and recovery of the main effluents and chemical waist from isotope separation plants and enriched compounds-15N and 34S production has been carried out at the Stable Isotope Laboratory (LIE) of the CENA/USP.
José Albertino Bendassolli   +3 more
doaj   +1 more source

The effect of dietary water soluble carbohydrate to nitrogen ratio on nitrogen partitioning and isotopic fractionation of lactating goats offered a high-nitrogen diet

open access: yesAnimal, 2016
The objective of this study was to investigate the relationship between nitrogen (N) partitioning and isotopic fractionation in lactating goats consuming diets with a constant high concentration of N and increasing levels of water soluble carbohydrate ...
L. Cheng   +4 more
doaj   +1 more source

Aplicação dos isótopos estáveis em aqüicultura Stable isotopes in aquaculture

open access: yesRevista Brasileira de Zootecnia, 2007
O produto mais importante do conhecimento é a ignorância. A situação sugere a imagem de alguém que vive numa ilha de conhecimento cercado por um mar de ignorância.
Carlos Ducatti
doaj   +1 more source

Nitrogen Diffusion in Calcite

open access: yesGeophysical Monograph Series, Page 97-104., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Daniele Cherniak   +2 more
wiley  

+1 more source

Engineering Biochar‐Derived Functional Materials for High‐Performance Supercapacitors: Design Principles, Mechanisms, and Scalable Strategies

open access: yesCarbon Energy, EarlyView.
ABSTRACT Biochar has emerged as a useful and adaptable source of carbon for supercapacitor electrodes. Its value comes from the way biomass chemistry, thermal conversion, and activation conditions shape the resulting pore network, surface groups, and degree of carbon ordering.
Soumen Mandal   +6 more
wiley   +1 more source

Obese women on a low energy rice and bean diet: effects of leucine, arginine or glycine supplementation on protein turnover

open access: yesBrazilian Journal of Medical and Biological Research, 2001
This study examined if leucine, arginine or glycine supplementation in adult obese patients (body mass index of 33 ± 4 kg/m²) consuming a Brazilian low energy and protein diet (4.2 MJ/day and 0.6 g protein/kg) affects protein and amino acid metabolism ...
J.S. Marchini   +3 more
doaj   +1 more source

An Ambient Photocatalytic Approach to In‐Situ Prepare Cobalt/Cobalt Phosphide and Cobalt/Cobalt Phosphide@Graphene Heterojunction Nanomaterials With Optimized Charge Separation Effects for Highly Efficient Relayed Electrocatalytic NOX− Reduction to NH3

open access: yesCarbon Energy, EarlyView.
A visible‐light‐driven ambient photocatalytic method in‐situ fabricates Co/CoP‐x and Co/CoP@rGO heterojunction with enhanced charge separation, enabling highly efficient relayed electrocatalytic NOx− reduction to NH3 with outstanding Faraday efficiency and ammonia productivity.
Xin Zhao   +7 more
wiley   +1 more source

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