Results 121 to 130 of about 56,496 (254)

A reappraisal of the Middle to Later Stone Age prehistory of Morocco Réévaluer la préhistoire du Maroc, du Middle Stone Age au Later Stone Age

Journal of the Royal Anthropological Institute, EarlyView.
Over the last 25 years, perceptions of the early prehistory of Northwest Africa have undergone radical changes due to new fieldwork projects and a corresponding growth in scientific interest in the region. Much of this work has been focused in Morocco, known for its extremely rich fossil and archaeological records in caves and rock shelters.
Nick Barton, Abdeljalil Bouzouggar, Stacy Carolin, Louise Humphrey   +3 more
wiley   +1 more source

Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders

Andrology, EarlyView.
Abstract The hypothalamic–pituitary–gonadal axis is regulated by the gonadotropin‐releasing hormone pulse generator in the hypothalamus. This is comprised of neurons that secrete kisspeptin in a pulsatile manner to stimulate the release of GnRH, and, in turn, downstream gonadotropins from the pituitary gland, and subsequently sex steroids and ...
Aureliane C. S. Pierret, Aaran H. Patel, Elisabeth Daniels, Alexander N. Comninos, Waljit S. Dhillo, Ali Abbara   +5 more
wiley   +1 more source

Proses Densifikasi Pelepah Sawit Menggunakan Gliserol sebagai Filler Menjadi Bahan Bakar Padat [PDF]

, 2017
Palm frond has been utilized only for raw source of animal feed, compost and organic fertilizer in plantation area. Oil palm fronds has calorific value of 15,184.05 kJ/kg with a density of 0.1383 g/cm3.
Anderson, J. (Jimmy), Helwani, Z. (Zuchra), Komalasari, K. (Komalasari)   +2 more
core  

What can lithics tell us about hominin technology's ‘primordial soup’? An origin of stone knapping via the emulation of Mother Nature

Archaeometry, EarlyView.
Abstract The use of stone hammers to produce sharp stone flakes—knapping—is thought to represent a significant stage in hominin technological evolution because it facilitated the exploitation of novel resources, including meat obtained from medium‐to‐large‐sized vertebrates. The invention of knapping may have occurred via an additive (i.e., cumulative)
Metin I. Eren, Stephen J. Lycett, Michelle R. Bebber, Alastair Key, Briggs Buchanan, Emma Finestone, Joseph Benson, Rebecca Biermann Gürbüz, Adela Cebeiro, Roman Garba, Anne Grunow, C. Owen Lovejoy, Danielle MacDonald, Erica Maletic, G. Logan Miller, Joseph D. Ortiz, Jonathan Paige, Justin Pargeter, Tomos Proffitt, Mary Ann Raghanti, Teal Riley, Jeffrey I. Rose, David M. Singer, Robert S. Walker   +23 more
wiley   +1 more source

The First Archaeomagnetic Age at Tiwanaku and Implications for Dating Andean Metallurgical Furnaces

Archaeometry, EarlyView.
ABSTRACT This paper presents the first archaeomagnetic dating at Tiwanaku (Andean Altiplano). We compared the geomagnetic field values recorded by a metallurgical furnace against an updated SHAWQ2k‐SH global model and a regional intensity curve, both of which include, for the first time, high‐quality intensity data from the Southern Hemisphere. Results
Judit del Río, Pablo Cruz, Miriam Gómez‐Paccard, Alicia Palencia‐Ortas, Marina Puente‐Borque, F. Javier Pavón‐Carrasco, Erik Marsh   +6 more
wiley   +1 more source

Untangling nutrient co‐regulation of ombrotrophic peatland development

Boreas, EarlyView.
Multi‐method (FTIR, FT‐NIR and TGA) approaches characterizing the organic peat constituents at Holcroft Moss reveal a record of switches that reflect broadly hydroclimate variability governing the decomposition patterns. There are periods, however, where hydroclimate does not fully explain the variability observed and instead changes appear linked to ...
Richard C. Chiverrell, Daniel N. Schillereff, Fiona E. Russell, Julie Valentine, Jason R. Kirby, David M. Wilkinson, John F. Boyle   +6 more
wiley   +1 more source

The study of air fuel ratio for open furnace MILD combustion of biogas on bluff-body burner [PDF]

, 2012
Economical fuel cost is very critical in the heating industry. Lean combustion with high air fuel ratio (AFR) is normally practiced by the industry. Low air fuel ratio or rich combustion will result in unburned hydrocarbons (UHC).
Noor, M. M., Wandel, Andrew P., Yusaf, T. F.   +2 more
core   +1 more source

Between famine and freedom: Food prices during the Indonesian War of Independence, 1945–9

The Economic History Review, EarlyView.
Abstract This paper investigates how the Indonesian War of Independence (1945‒9) influenced staple food prices, and how fluctuations in those prices, in turn, shaped the trajectory and dynamics of the conflict. We compiled a dataset comprising more than 8600 prices for staple foods covering the entire Indonesian archipelago from 1939‒49, allowing us to
Ingrid de Zwarte, Helmi Moret, Pim de Zwart   +2 more
wiley   +1 more source

PERFORMANSI MESIN DIESEL MENGGUNAKAN BIODIESEL DARI CAMPURAN BIJI KARET-MINYAK PIROLISIS LIMBAH PLASTIK-MINYAK SOLAR

Rekayasa Mesin
This research examines the performance of a Diesel engine that uses alternative fuel biodiesel from a mixture of rubber seeds with plastic waste pyrolysis and diesel oil.
Tulus Burhanuddin Sitorus, Bisrul Hapis Tambunan, Hendrik Voice Sihombing, Himsar Ambarita   +3 more
doaj   +1 more source

Women's Dietary Diversity and Child Feeding Practices Amidst COVID19 in India: Findings From National Family Health Surveys, 2016–2021

Maternal &Child Nutrition, EarlyView.
ABSTRACT The COVID‐19 pandemic caused a crisis that jeopardized food consumption and dietary diversity. This study aimed to: (1) investigate relationship between COVID‐19 and women's and children's diets in India; (2) examine how this varies by socioeconomic status and mothers' vegetarianism; and (3) assess whether mobility restrictions during India's ...
Anjali Pant, Suman Chakrabarti, Derek Headey, Nishmeet Singh, Phuong Hong Nguyen   +4 more
wiley   +1 more source