Results 31 to 40 of about 173,479 (247)

Sound insulation requirements in office buildings and schools

Archives of Acoustics, 2015
By order of the Austrian Ministry for Building and Technology the sound insulation between adjacent rooms in schools and office buildings has been measured.
J. LANG
doaj  

Histological and Chemical Studies of Goat Skin Transformation Processing of Raw Skin into Tanned Leather

Jurnal Agripet
Fresh goat skin and skins tanned with different tanning agents were prepared for histological, chemical, and physical analyses. Fresh skin samples were fixed in 10% formalin solution, processed using the paraffin embedding technique, sectioned, and ...
Atiqa Rahmawati, Naimah Putri, Ari Wibowo   +2 more
doaj   +1 more source

Effect of ultrasonic degradation of hyaluronic acid extracted from rooster comb on antioxidant and antiglycation activities

Pharmaceutical Biology, 2017
Content: Recently, low-molecular-weight hyaluronic acid (LMWHA) has been reported to have novel features, such as free radical scavenging activities, antioxidant activities and dietary supplements.
Jawhar Hafsa, Mohamed Aymen Chaouch, Bassem Charfeddine, Christophe Rihouey, Khalifa Limem, Didier Le Cerf, Sonia Rouatbi, Hatem Majdoub   +7 more
doaj   +1 more source

Engineered Mycelial Scaffolds With Tunable Ultraviolet Protection, Wettability, Thermal Stability, and Spatial Mechanics

Advanced Engineering Materials, EarlyView.
Fungal mycelia grown into biodegradable scaffolds and infused with titania nanoparticles show enhanced ultraviolet shielding, thermal protection, and surface nonwettability. Properties were tuned by drying methods, revealing structure–function relationships.
Juwon S. Afolayan, Xin Zhang, Carole C. Perry   +2 more
wiley   +1 more source

Chemical and structural variations in hazelnut and soybean oils after ozone treatments

Grasas y Aceites, 2018
In the present work, the effect of ozone treatments on the structural properties of soybean oil (SBO) and hazelnut oil (HO) were investigated. The study presents the findings and results about the oxidation of HO and SBO with ozone, which has not been ...
H. Uzun, E. G. Kaynak, E. Ibanoglu, S. Ibanoglu   +3 more
doaj   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

Advanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song, Stefan Rettinger, Chengzhang Xu, Ulrich Mansfeld, Markus Retsch   +4 more
wiley   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Optimization of Fulvic Acids Production from Oil Palm Empty Fruit Bunches Using Microwave Extractor

Menara Perkebunan
Fulvic acid (FA) derives from a non-renewable source, Shilajit, known as highly commercial values for its benefit for human health. Fulvic acid can also be extracted from materials such as coal, lignite, and peat.
Firda Dimawarnita, Khairy Yunda Maharani, Yora Faramitha, Donny Nugroho Kalbuadi, Haryo Tejo Prakoso, Indah Puspita Sari, Dedy Prasetyo, Sutanto Sutanto, Didiek Hadjar Goenadi   +8 more
doaj   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Rapid synthesis of Silver Nanoparticles with Rheum ribes L Fruit Peels: Anticancer and Antimicrobial Effects with Biocompatible Structures

Journal of Agricultural Sciences
Silver nanoparticles (AgNPs) are substances with a wide range of uses. Utilizing extracts obtained from the peels of Rheum ribes L. (Rr) fruit growing in Erzurum region, silver nanoparticles were rapidly created in this study with a quick, easy, and ...
Duygu Neval Sayın İpek, Mehmet Fırat Baran, Murat Zor   +2 more
doaj   +1 more source