Results 131 to 140 of about 17,390 (287)

The effect of oxygen on the aromatization of methane over the Mo/HZSM-5 catalyst

, 1999
The aromatization of methane over a Mo/HZSM-5 catalyst was carried out in the presence of oxygen. It is shown that the addition of a small amount of oxygen is beneficial to improve the durability of the catalyst.
Ying, PL, Yuan, SD, Xin, Q, Li, J, Feng, ZC, Li, C, Hao, ZX   +6 more
core  

Pretreatment Effects of Conventional and Reactive Extrusion on LLDPE Waste Pyrolysis

Polymer Engineering &Science, EarlyView.
Schematic overview of the pyrolysis study using original and pretreated LLDPE waste samples. Pretreatment was performed via twin‐screw extrusion at 450°C: without additives (REX), with peroxide (REX‐RO2), or with polypropylene (REX–PP). All four samples underwent pyrolysis at 450°C–475°C for 15–45 min.
Yasmin Fialho Siqueira, Débora M. V. Miranda, Larissa L. A. Carvalho, Natasha K. Sitton, Ana Paula de Azeredo, Regina F. Nonemacher, Raquel S. Mauler, Luiz Eduardo P. Borges, José Carlos Pinto   +8 more
wiley   +1 more source

Ethane and ethylene aromatization on zinc-containing zeolites

, 2017
The importance of balance between the number of Zn and Brønsted acid sites for aromatization of ethane and ethylene on Zn-ZSM-5 is discussed.
Raul F. Lobo, Ali Mehdad
core   +1 more source

Optimizing acupuncture dosing for hormone therapy‐induced hot flashes in cancer patients: A regression‐based analysis and narrative review

Precision Medical Sciences, EarlyView.
Our analysis reveals a clear dose–response relationship between acupuncture sessions and the reduction of hormone therapy‐induced hot flashes. A threshold of approximately 10 sessions establishes a robust quantitative benchmark for achieving clinically meaningful neuro‐autonomic modulation and symptom relief.
Jiaming Cui, Xinyao Wei, Lulu Bin, Shaoxin Sun, Yu Liu, Tao Yang, Zhishun Liu, Jiani Wu   +7 more
wiley   +1 more source

General and Rapid Pyrimidine Condensation by Addressing the Rate Limiting Aromatization

, 2016
The rate limiting aromatization within the condensation approach toward pyrimidines utilizing amidines and activated olefins was addressed to provide for a general and rapid process.
Sanjit Sanyal (1670368), Shengli Ma (1392823), Nelu Grinberg (1392820), Chris H. Senanayake (1392808), Delia Reinhardt (1796113), Heewon Lee (1392817), Keith R. Fandrick (1434070), Jinhua J. Song (1433575), Daniel R. Fandrick (1670362), Jean-Nicolas Desrosiers (1392826)   +9 more
core   +1 more source

Multimodal targets of (‐)‐α‐thujone mediating avoidance behavior of a stored‐products pest, Tribolium castaneum, in response to irritant stimuli

Pest Management Science, EarlyView.
We identified four kinds of target molecules against (‐)‐α‐thujone associating avoidance behavior in Tribolium castaneum, indicating multimodality. Abstract BACKGROUND The reciprocal evolutionary processes among phytophagous insects and host plants involve host shift in the herbivorous insects in response to defense chemicals, such as plant‐derived ...
Kenji Shimomura, Yuto Suzuki, Soshi Ino, Takehito Terajima, Motohiro Tomizawa   +4 more
wiley   +1 more source

Dimethyl‐, Diethyl‐, and Propylene Carbonates: An Emerging Class of Green Solvents for Organic Synthesis

The Chemical Record, EarlyView.
This review highlights recent advances in the use of organic carbonates, dimethyl carbonate (DMC), diethyl carbonate (DEC), and propylene carbonate (PC), as solvents in organic synthesis. Based on over seventy studies from the past 6 years, it shows their application in different organic reaction types, emphasizing their role in safer and more ...
Gabriela T. Quadros, Livia C. L. Valente, Thiago Barcellos, Daniela Hartwig, Laura Abenante, Eder J. Lenardão   +5 more
wiley   +1 more source

Computational Insight into Methane–Methanol Coupling and Aromatization over Metal-Modified ZSM-5: From Mechanism to Catalyst Screening

Chem & Bio Engineering
ZSM-5 zeolite modified by molybdenum is one of the promising catalysts for methane dehydroaromatization (MDA). The introduction of methanol to couple with methane over metal-modified ZSM-5 can facilitate the MDA reaction, but the reaction mechanism ...
Mengnan Sun, Xiaowa Nie, Xinwei Zhang, Sirui Liu, Chunshan Song, Xinwen Guo   +5 more
doaj   +1 more source

Maternal, childhood and adolescent influences on Leydig cell functional capacity and circulating INSL3 concentration in young adults: Importance of childhood infections and body mass index

Andrology, EarlyView.
Abstract Background The constitutive Leydig cell hormone insulin‐like peptide 3 (INSL3) is considered a good estimate of the adult Leydig cell functional capacity and appears to remain relatively consistent throughout adult male life, only gradually declining into old age.
Richard Ivell, Bilal Tulumcu, Waleed Alhujaili, Ravinder Anand‐Ivell   +3 more
wiley   +1 more source

Ring enlargement and aromatization of propylcyclobutane over silica-supported Pt, Pd and Rh in hydrogen atmosphere

, 1994
Ring enlargement and/or aromatization accompany the hydrogenative ring opening of propylcyclobutane over Pt/SiO2, Rh/SiO2 and Pd/SiO2 catalysts at high temperature.
Pálinkó István, Pálinkó, István, Bartók, Mihály, Török, Béla, Bartók Mihály, Molnár Árpád, Molnár, Árpád, Török Béla   +7 more
core   +1 more source