Results 61 to 70 of about 8,902 (203)

Synthesis, Structures, and Properties of Cyclopenta‐Fused Anthra[1,2‐a]anthracene Derivatives as New Polycyclic Aromatic Compounds

Chemistry – A European Journal, EarlyView.
Three new polycyclic aromatic compounds consisting of one or two five‐membered rings were synthesized by Scholl reaction or Pd‐catalyzed cyclization from fused anthracene derivatives. X‐ray analysis and DFT calculations revealed that these compounds have slightly twisted or curved structures.
Moe Kobayashi, Yu Watanabe, Eiji Tsurumaki, Masahiro Yamashina, Hiroshi Ikeda, Daiki Tauchi, Masashi Hasegawa, Shinji Toyota   +7 more
wiley   +1 more source

مطالعهDFT ساختار مواد رنگزایH 4-پیران‌‌های دارای پل آریل آزو [PDF]

علوم و فناوری رنگ, 2018
مشتقات پیران به علت دارا بودن خواص زیستی متنوع و خواص دارویی از قبیل ضد ویروس، ضد باکتری و ضد التهاب مورد توجه بسیاری از شیمی‌دان‌ها قرار گرفته‌اند. در سال‌های اخیر مطالعه‌های زیادی روی سنتز مشتقات جدید و هم چنین ارائه روش‌های جدید سنتز آنها انجام گرفته ...
محمد نیک پسند, لیلا زارع‌فکری, سیده پرنیا حلمی   +2 more
doaj  

Chiral Cycloparaarylenes Incorporating Binaphthyl Units: Dramatic Effects of Peripheral Functionalization on (Chir)Optical Properties

Chemistry – A European Journal, EarlyView.
Chiral cycloparaarylenes (CPAs) incorporating binaphthyl units were synthesized. The methoxy‐substituted and methylenedioxy‐bridged systems adopt D3‐ and C3/C1‐symmetric structures, respectively. They exhibited distinct solid‐state emission and aggregation‐induced emission enhancement (AIEE).
Kazuto Takaishi, Kotaro Nakahara, Kasumi Nishiyama, Tadashi Ema   +3 more
wiley   +1 more source

Evaluation of agronomic traits and storage stability in novel rice cultivar ‘Baromi3’ combining floury endosperm and lipoxygenase 3 deficiency

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Rice milling characteristics and storage stability are critical traits influencing industrial applications. Floury endosperm rice carrying the flo4‐4 allele is valuable for dry milling but exhibits reduced storage stability associated with altered starch structural characteristics.
Su‐Kyung Ha, Ye‐Ji Lee, Gileung Lee, Hyun‐Sook Lee, Kyeongmin Kang, Jae‐Ryoung Park, Seung Young Lee, Ji‐Eun Kwak, Mina Jin, Ji‐Ung Jeung, Chang Joo Lee, Jung‐Pil Suh   +11 more
wiley   +1 more source

[Au4(dppb)3]2+ – A Planar Gold Cluster with Bright Excitation Wavelength Dependent Emission

Small, EarlyView.
The first planar [Au4]2+ cluster with a deltoid geometry displays red to near‐infrared emission tunable from 700 to 918 nm. A quantum yield of 17% is observed at 770 nm upon 375 nm excitation. Excitation‐wavelength‐dependent shifts in emission reveal the involvement of multiple excited states, highlighting unprecedented photophysical versatility in ...
Markus Strienz, Jakob Keck, Wolfgang Leis, Jonas L. Hiller, Claudio Schrenk, Christoph Kertzscher, Michael Seitz, Marcus Scheele, Alfred J. Meixner, Andreas Schnepf   +9 more
wiley   +1 more source

Clinical outcomes of single blastocyst transfer with machine learning guided noninvasive chromosome screening grading system in infertile patients

Reproductive Biology and Endocrinology
Background Prospective observational studies have demonstrated that the machine learning (ML) -guided noninvasive chromosome screening (NICS) grading system, which we called the noninvasive chromosome screening-artificial intelligence (NICS-AI) grading ...
Xiaoxi Li, Yaxin Yao, Dunmei Zhao, Xiufeng Chang, Yi Li, Huilan Lin, Huijuan Wei, Haiye Wang, Ying Mi, Lei Huang, Sijia Lu, Weimin Yang, Liyi Cai   +12 more
doaj   +1 more source

Updated EAACI Statement on Drug Hypersensitivity Skin Testing: Methodology and Non‐Irritative Concentrations

Allergy, EarlyView.
ABSTRACT These updated EAACI guidelines aim to standardize skin testing methodologies for both immediate and non‐immediate drug hypersensitivity reactions. For immediate reactions, the optimal testing window is 4–6 weeks post‐reaction; whereas beyond 6 months, false‐negative results increase.
Annick Barbaud, Lene Heise Garvey, Elizabeth Phillips, Michael Ardern‐Jones, Sevim Bavbek, Patrizia Bonadonna, Jean‐Christoph Caubet, Ana‐Maria Copaescu, Valentina Gueli, Jose Julio Laguna, Ricardo Madrigal‐Burgaleta, Francesca Mori, Vito Sabato, Maria J Torres, Knut Brockow   +14 more
wiley   +1 more source

Innovation and the great divergence

The Economic History Review, EarlyView.
Abstract Recent historical national accounting data show that the timing of the Great Divergence hinges on the different trends in north‐west Europe and the Yangzi Delta region of China. Although north‐west Europe only pulled ahead of the Yangzi Delta after 1700, both the positive trend of GDP per capita in north‐west Europe after 1700 and the negative
Stephen Broadberry, Runzhuo Zhai
wiley   +1 more source

ROUNDTABLE SESSION 2: DOES LEGISLATION WORK IN PROTECTING VULNERABLE SPECIES?

Knowledge and Management of Aquatic Ecosystems, 2005
As a result of discussions held at the Innsbruck CRAYNET meeting and the answers given to a subsequent questionnaire sent out to the National Co-ordinators of the 11 countries/regions, it is clear that most European countries aim at trying to protect ...
HOLDICH D. M., PÖCKL M.
doaj   +1 more source

Integrated Multispectroscopic Identification of Organophosphorus and Triazine Pesticide Mixtures via DFT–Spectroscopy‐Integrated Identification Method (D‐SIIM)

Analysis &Sensing, Volume 6, Issue 6, November 2026.
Identifying unknown chemicals in mixtures is limited by the reference libraries available. D‐SIIM instead cross‐validates experimental IR, Raman, and NMR spectra against DFT predictions, resolving all components of pesticide mixtures containing up to four multiring organophosphorus and triazine compounds including one for which GC–MS screening proved ...
Hye Jin Jeong, Jinkwang Jeong, Yonggoon Jeon, Yoonjae Cho, Seung‐Ryul Hwang, Myunghee Lim, Keunhong Jeong   +6 more
wiley   +1 more source