Results 21 to 30 of about 11,773,836 (295)

On the Area of Harmonic Surfaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1978
We prove that if the sequence S n {S_n}
openaire   +2 more sources

Measuring and achieving moderate-scale operation of new agricultural business entities in hilly and mountainous areas: an empirical study on citrus, pepper, and grain farming in Chongqing's Jiangjin Modern Agricultural Park, China

open access: yesFrontiers in Sustainable Food Systems
Moderate-scale agricultural operations are central to improving the quality and efficiency of modern regional agriculture and advancing agricultural modernization.
ShiChao Zhang   +4 more
doaj   +1 more source

Exploring Manufacturing Process and Degradation Products of Gilt and Painted Leather

open access: yesApplied Sciences, 2019
In this work, we studied the manufacturing processes and the conservation state of gilt and painted leather fragments from Palazzo Chigi in Ariccia (Italy) by using different analytical techniques.
Morena Iorio   +8 more
doaj   +1 more source

Adsorption of water on the fine fractions of Finnish tills [PDF]

open access: yesBulletin of the Geological Society of Finland, 1986
This study deals with adsorption of water from the vapour phase on till samples at 25°C. The dry weights were determined after drying the samples in an oven at 105°C.
A. Kellomäki, P. Nieminen
doaj   +1 more source

Surface-Area-to-Volume Ratio Determines Surface Tensions in Microscopic, Surfactant-Containing Droplets

open access: yes, 2023
The surface composition of aerosol droplets is central to predicting cloud droplet number concentrations, understanding atmospheric pollutant transformation, and interpreting observations of accelerated droplet chemistry. Due to the large surface-area-to-
Kunal Ghosh (17277791)   +3 more
core   +1 more source

Regulasi Penyerahan Lokal Konten Universitas Medan Area

open access: yes, 2020
17 HalamanLokal konten adalah karya yang dihasilkan oleh suatu institusi yang sifatnya ilmiah dan siap untuk di publikasi. Lokal konten Universitas Medan Area adalah karya-karya ilmiah yang dihasilkan oleh dosen dan mahasiswa serta lembaga/unit yang ada ...
Universitas Medan Area, Perpustakaan
core   +1 more source

Effect of Rock Strata Dip on Soil Detachment Capacity of Different Land Use Types in Karst Trough Valley Area

open access: yesShuitu Baochi Xuebao
[Objective] This study aimed to explore the influence mechanism of rock strata dip on soil erodibility and provide references for preventing and controlling water and soil erosion in karst trough valley area.
JIANG Lisha   +5 more
doaj   +1 more source

The multidimensional development index of new agricultural business entities in mountainous and hilly areas based on the projection pursuit evaluation model: evidence from household survey data in the modern agricultural Park of Jiangjin district, Chongqing

open access: yesFrontiers in Sustainable Food Systems
China’s gradual transition from traditional agriculture to modern agriculture has allowed land factors with comparative advantages in the countryside to be identified, which, in turn, has promoted the two-way flow of urban and rural resources, leading to
Shichao Zhang   +5 more
doaj   +1 more source

On the p-Affine Surface Area

open access: yesAdvances in Mathematics, 2000
We give geometric interpretations of certain affine invariants of convex bodies. The affine invariants are the p-affine surface areas introduced by Lutwak. The geometric interpretations involve generalizations of the Santaló-bodies introduced by the authors in a previous paper.
Meyer, Mathieu, Werner, E
openaire   +2 more sources

Exploring social-ecological system resilience in South China Karst: Quantification, interaction and policy implication

open access: yesGeography and Sustainability
China’s Grain to Green Program (GTGP), which is one of the largest payments for ecosystem services (PES) in the world, has made significant ecological improvements to the environment.
Tiantian Chen, Yuxi Wang, Li Peng
doaj   +1 more source

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