Results 191 to 200 of about 542,281 (388)

Elucidating the Fe(III) Directed 15‐Step Domino Inter‐ and Intramolecular Progressive Coordinative Oligomerization of a Heterocycle Aggregate

open access: yesAggregate, EarlyView.
A domino reaction leading to the novel heterocyclic aggregate 2,9‐dihydrobenzo[b]cyclopenta[e][1,4]thiazine has been developed, with its mechanism elucidated by crystallography and ESI‐MS to reveal a 15‐step reaction sequence (the longest reported to date) involving intermolecular C‐C coupling and intramolecular expansion.
Kai‐Bin Chen   +9 more
wiley   +1 more source

PATHOLOGY OF ELASTIC CARTILAGE IN THE EPIGLOTTIS AND AURICLE

open access: yesZdravniški Vestnik, 2002
Background. The purpose of this study was to define the pathological changes of some lesions of the elastic cartilage of the epiglottis of the larynx and the auricle and to consider their pathogenesis.Methods.
Leslie Michaels
doaj  

The Lower Esophageal Intrinsic Sphincter and the Mechanism of Reflux

open access: green, 1967
Howard N. Anderson   +6 more
openalex   +2 more sources

NIR‐II AIEgens for High‐Contrast Intravital Fluorescence Angiography: Recent Advances and Prospects

open access: yesAggregate, EarlyView.
This review delineates recent advances in NIR‐II AIEgens for high‐contrast intravital fluorescence angiography applications, which are systematically categorized by the anatomical location of vessels, encompassing brain, abdomen, hindlimb, ear, axilla, kidney, and tumor.
Zhijun Zhang   +8 more
wiley   +1 more source

Hybrid rule‐based and optimization‐driven framework for the synthesis of end‐to‐end optimal pharmaceutical processes

open access: yesAIChE Journal, EarlyView.
Abstract The modernization of pharmaceutical manufacturing is driving a shift from traditional batch processing to continuous alternatives. Synthesizing end‐to‐end optimal (E2EO) manufacturing routes is crucial for the pharmaceutical industry, especially when considering multiple operating modes—such as batch, continuous, or hybrid (containing both ...
Yash Barhate   +4 more
wiley   +1 more source

Comparing exergy and heat pump work in distillation systems

open access: yesAIChE Journal, EarlyView.
Abstract This study compares the exergy supplied to a distillation column with the actual energy consumption of a heat pump‐assisted distillation (HPAD) system. It evaluates the reliability of exergy as a proxy for heat pump work demand in such systems.
Akash Sanjay Nogaja   +2 more
wiley   +1 more source

Minimum reflux calculation for multicomponent distillation in multi‐feed, multi‐product columns: Algorithms and examples

open access: yesAIChE Journal, EarlyView.
Abstract In this work, we present the first algorithm for identifying the minimum reboiler vapor duty requirement for a general multi‐feed, multi‐product (MFMP) distillation column separating ideal multicomponent mixtures. This algorithm incorporates our recently developed shortcut model for MFMP columns.
Zheyu Jiang   +2 more
wiley   +1 more source

Gastroesophageal reflux and hiatal hernia

open access: bronze, 1967
Harold C. Urschel, Donald L. Paulson
openalex   +1 more source

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