Results 201 to 210 of about 8,457 (259)

A failed human expansion out of Africa 100,000 years ago

Rose J, Garba R, Arnold L, Beshkani A, Bicho N, Černý V, Chlachula D, Dellmour R, Hallinan E, Kamenik J, Mahri AA, Mahrooqi AA, Meredith-Williams M, Samawi O, Usik V, Marks A.   +15 more
europepmc   +1 more source

Evaluating the interference potential of minerals in infrared absorbance-based quantification of respirable crystalline silica in mine dusts. [PDF]

J Occup Environ Hyg
Parks DA, Finley SA, Tjandra PM, Baker LL, Yeley A, Miller AL.   +5 more
europepmc   +1 more source

Interfacial Engineering of Cu/ZnX2O4 (X = Ga, Cr, Al) Spinel‐Supported Catalysts for Enhanced CO2 Hydrogenation to Methanol

Carbon and Hydrogen, EarlyView.
Engineered Cu‐ZnGa interfaces on spinel supports enhance metal–support interaction and Cu dispersion, suppress reverse water‐gas shift, and achieve high CO2 conversion, methanol selectivity, and operational stability. ABSTRACT Catalytic hydrogenation of carbon dioxide to methanol is a key approach for carbon resource utilization and carbon neutrality ...
Zhaohui Liu, Zhiqiang Yan, Ying Yang, Yuhao Tian, Yanchun Li, Peixiang Shi, Congming Li   +6 more
wiley   +1 more source

Earliest evidence of elephant butchery at Olduvai Gorge (Tanzania) reveals the evolutionary impact of early human megafaunal exploitation. [PDF]

Elife
Dominguez-Rodrigo M, Baquedano E, Moclan A, Uribelarrea D, Correa-Cano JÁ, Diez-Martin F, Velazquez-Tello A, Organista E, Mendez-Quintas E, Vegara-Riquelme M, Gidna A, Mabulla A.   +11 more
europepmc   +1 more source

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

Carbon 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, Avinash C. Mendhe, Mayna Roy, Neha S. Barse, Taejoon Park, Han‐Seung Lee, Haigun Lee   +6 more
wiley   +1 more source

Extraction of Aluminum and Lithium from Fly Ash via Alkali Roasting-Acid Leaching. [PDF]

ACS Omega
Li H, Huang Y, Zhang S, Bai R, Wei H, Liu W, Cui Q, Li S.   +7 more
europepmc   +1 more source

High Thermoelectric Performance Achieved by Manipulating the Band Structure and Lattice Dislocations in n‐Type Ge/Pb/Br Codoped Polycrystalline SnSe

Carbon Energy, EarlyView.
Pb/Ge/Br codoping in n‐type polycrystalline SnSe induces band convergence and high‐density dislocations, yielding a high power factor of 7.47 μW cm−1 K−2 and ultralow lattice thermal conductivity. Consequently, a peak ZT of 1.6 is achieved, overcoming the traditional performance limitations of n‐type SnSe.
Pubao Peng, Yang Geng, Jiajun Nan, Song Li, Dewei Zhang, Qing Lin, Yaru Gong, Guodong Tang   +7 more
wiley   +1 more source

Combustion Characteristics and Emissions of 99% Cracked Ammonia Blends in a Gas Turbine Representative Swirl. [PDF]

Energy Fuels
Alnaeli M, Mazzotta L, Lamioni R, Morris S, Valera-Medina A.   +4 more
europepmc   +1 more source

Biomass‐Coupled HER System: A Strategy for Sustainable and Low‐Cost Hydrogen Production

Carbon Energy, EarlyView.
Pine wood is carbonized into a hierarchically porous biochar anode that undergoes carbon oxidation reaction, replacing the oxygen evolution reaction in alkaline water electrolysis. The resulting biomass‐coupled HER system converts water into hydrogen at low cell voltages, enabling low‐cost H2 production from renewable carbon resources. ABSTRACT Biomass‐
Yuming Huang, Wei Zhou, Liang Xie, Miaoting Sun, Junfeng Li, Xuewei Zhang, Jiaxiang Chen, Xiaoxiao Meng, Jihui Gao, Guangbo Zhao, Bo Song   +10 more
wiley   +1 more source

Zwitterionic Mn(III)-Tetraphenyl Porphyrins: Water-Soluble MRI Contrast Agents with High Relaxivity. [PDF]

ChemMedChem
Ludolfs D, Spickschen LFV, Bredehöft S, Schulze VR, Oest M, Chaviano SL, Feliu N, Fischer M, Fortin MA, Frangioni JV, Maison W.   +10 more
europepmc   +1 more source