Results 111 to 120 of about 513,714 (303)

Could a kangaroo win the Tour de France? The effect of relative crank angle on metabolic efficiency in cycling. [PDF]

open access: yes, 2016
The rapid evolution of bicycles in the 1800s increased the speed of human powered transportation ten-fold compared to walking and decreased the metabolic power required by 300%. However, the metabolic gross efficiency has hardly changed.
Straw, Asher H
core   +2 more sources

Fish Scales: A Multifunctional Biomaterial from Nature

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Effect of age and nutrient restriction pre partum on beef suckler cow serum immunoglobulin concentrations, colostrum yield, composition and immunoglobulin concentration and immune status of their progeny [PDF]

open access: yes, 2006
peer-reviewedThe effect of cow age (multiparous (MP) v. primiparous (PP)) and nutritional restriction pre partum (grass silage ad libitum v. straw only ad libitum for the last 15 (s.d.
Caffrey, Patrick J.   +2 more
core  

Nanofiber PVA‐Based Membranes Incorporating Functionalized Spanish Broom Derivatives for Sustainable Water Purification

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This study investigates Spanish broom (Spartium junceum) as a renewable source for electrospun composite membranes in sustainable water purification. MCC and biochar were functionalized with eco‐friendly precursors and nanomaterials (i.e., HNT, β‐CDs) to develop hybrid PVA nanofiber composites.
Giulia Rando   +7 more
wiley   +1 more source

Functionalized Cyclodextrin/Carboxymethyl Cellulose Composite Hydrogel with Double Network Structure for Adsorption of Heavy Metal Ions in Wastewater

open access: yesMolecules
Heavy metal ions in industrial wastewater pose significant environmental and ecological threats. In this work, a hydrogel featuring a double network structure was synthesized via radical polymerization and cross-linking of β-cyclodextrin (CD) and ...
Hong Zhang   +5 more
doaj   +1 more source

Economics of Sourcing Cellulosic Feedstock for Energy Production [PDF]

open access: yes
This study investigates the economics of supplying wheat straw and corn stover within 100 mile radius of a potential new biorefinery in southeast North Dakota.
Gustafson, Cole R.   +4 more
core   +1 more source

Friends Make a Difference [PDF]

open access: yes, 2006
While many people think in terms of Friends groups for public libraries, such groups also play an important role in academic libraries. The first Friends organization for an academic library dates back to Harvard in 1925.
Straw, John B.
core  

Biomass‐derived hydrochars as eco‐friendly adsorbents for wastewater treatment applications

open access: yesEnvironmental Progress &Sustainable Energy, EarlyView.
Abstract Emerging organic pollutants (EOPs), such as diethyl phthalate (DEP), bisphenol A (BPA), and methylene blue (MB), are only partially removed in conventional wastewater treatment plants. This study assesses hydrochars produced by hydrothermal carbonization (HTC) of spruce bark (SB), vine shoots (VSs), and wheat straw (WSs) for removing three ...
Emanuel Gheorghita Armanu   +6 more
wiley   +1 more source

Delignification by Using Alkaline-acid Pretreatment on Bioethanol Production From Rice Straw [PDF]

open access: yes, 2013
Rice straw as agricultural waste contains cellulose that potentially to produce ethanol. However, it has lignin content that will inhibit the enzyme in converting glucose into ethanol.
Jannah, A. M. (Asyeni)
core   +1 more source

A Review on Carbon‐Based and Metal‐Based Anode Materials of Microbial Fuel Cells

open access: yesEnergy Science &Engineering, EarlyView.
Reviews a wide range of anode materials used in microbial fuel cells (MFCs) and evaluates their performance and suitability for scalable energy recovery from wastewater. Defines the essential characteristics of an ideal anode, including high surface area, excellent electrical conductivity, strong biocompatibility, and cost‐effectiveness, while ...
Md. Hamidur Rahman   +1 more
wiley   +1 more source

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