Rose Bengal, an organic dye, was demonstrated to be a photoredox catalyst for dehydrogenative coupling reactions using visible light irradiation. α-Functionalised tertiary amines were obtained with good excellent yields. Air is essential this reaction and acts as the terminal oxidant. This environmentally friendly C–H functionalisation methodology that avoids use of metal catalysts stoichiometric amount peroxo-compounds.

In this paper we develop tight bounds on the expected values of several risk measures that are interest to us. This work is motivated by robust optimization models arising from portfolio selection problems. Indeed, whole centered around and solutions. The basic setting find a maximizes (respectively, minimizes) utility disutility) in midst infinitely many possible ambiguous distributions investment returns fitting given mean variance estimations. First, show single-stage problem within...

The utilization of a photo-induced synthon generated from N-phenyl glycine by an organic dye and visible light irradiation is disclosed. intermediate could be coupled with either radical or nucleophile in simple operation to afford several natural product-like compounds.

In “An Exponential Cone programming Approach for Managing Electric Vehicle Charging,” Chen, He, and Zhou propose a novel ECP approach to solving large-scale optimization of electric vehicle charging in public stations such as EVgo. Other than the stochastic arrivals customers with different arrival/departure times requirements, routinely incur high demand charges, costs related highest per-period total electricity used billing cycle, which can be 70% bill. For case unlimited chargers,...

Decision making under uncertainty involves both ambiguity and risk. In “Robust CARA Optimization,” Chen Sim have developed innovative optimization models designed for ambiguity-averse decision makers whose risk preference is consistent with constant absolute aversion (CARA). The research delves into maximizing the worst-case expected exponential utility amid uncertainties from independent factors ambiguous marginals. To enhance computational feasibility, authors a series of approximations:...

The combined application of two or more metals in homogeneous catalysis can lead to synergistic effects; however, the phenomenological basis for these observations often goes undetermined. hetero-bimetallic catalytic binuclear elimination reaction, a system involving both mononuclear and dinuclear intermediates, has been repeatedly suggested as possible mechanism. In present contribution, simultaneous Rh4(CO)12 HRe(CO)5 precursors hydroformylation reaction leads very strong rate effect. situ...

Presented in this paper is a method for the design of modular reconfigurable machine tools (MRMTs). An MRMT capable using minimal number modules through reconfiguration to perform required machining tasks family parts. The proposed consists three steps: module identification, determination, and layout synthesis. In first step, components are collected from general-purpose machines establish library. second given parts be machined, set needed selected library construct desired tool. third...

Microbial electrochemical systems have shown great value as a means of enhancing the efficiency fermentation reactions, but at present, there is no reliable to balance extracellular electron supply and corresponding intracellular demands in these systems. The current work describes unique use an oxidation–reduction-potential (ORP)-level-controlled microbial electrolysis cell (MEC) system successfully succinic acid via A. succinogenes (130Z). ORP-controlled MEC with neutral red (NR) yielded...

The surface defect detection method based on visual perception has been widely used in industrial quality inspection. Because data are not easy to obtain and the annotation of a large number will waste lot manpower material resources. Therefore, this paper reviews methods products small labeled data, is divided into traditional image processing-based product deep learning-based suitable for data. statistical methods, spectral model methods. Deep augmentation, transfer learning, model-based...

The enforcement of ever‐stringent regulatory requirements capping emission limits is challenging the traditional operations various transportation sectors. In maritime transportation, recent regulation tightening fuel sulfur to 0.50%, known as “IMO 2020,” has been enforced. There a flurry activities by ocean carriers equip their vessels comply with this regulation. Although technical conditions are clear, investment decisions hard make due inevitable uncertainties in current transition...

PT-symmetric optical systems have been widely researched in recent years and most of the researches are limited to weakly guiding condition. In this paper, we propose a method based on conventional coupled mode theory (CMT) describe coupling regardless conditions. With method, can examine unique PT characteristics design various structures.

This article is the first of a 2-part series reporting results 7-month study porter operations at Vancouver General Hospital, Vancouver, British Columbia, Canada. Part 1 describes importance efficient services, system's operation time study, challenges faced in carrying out performance measures developed, recommendations, and outcomes. 2 simulation model that measured impact system changes linear programming developed to improve schedules.

In the era of Industry 4.0 to 5.0, manufacturing industry is dedicated improving its production efficiency, control capability and competitiveness with intelligent enhancement. As a typical discrete industry, it difficult for ocean engineering (OE) manufacturers accurately entire process, establishment an integrated system supported by digital twin (DT) technology better solution. This paper proposes comprehensive set architectures DT workshop. It focuses on planning, which main line...

An improved algorithm using minimization of entropy and spectral similarity (MESS) was tested to recover pure component spectra from in situ experimental Fourier transform infrared (FT-IR) reaction data, which were collected a homogeneous rhodium catalyzed hydroformylation isoprene. The are complicated highly overlapping because the presence multiple intermediate products this system. traditional method fails resolve real mixture spectra, but MESS can successfully reconstruct unknown for...

Extraction of quantitative information from large sets sequential time-series spectra (two-dimensional, 2D, data) using a curve-fitting procedure is investigated. The difference between any experimental spectrum and curve-fitted constructed in least-squares manner the Pearson VII model selected as general band-shape function for infrared absorbance spectra. starting point 2D peak map. Next, an interior array chosen, initial guesses band parameters are provided by initialization scheme, curve...

In situ spectroscopic measurements are fairly common in homogeneous catalysis. However, although it is easy to accumulate vast amounts of data, their appropriate analysis becomes a critical issue. Accordingly, we have developed simple-to-implement but numerically sophisticated tool. Let A denote matrix absorbance n the number preliminary spectra obtained from stepwise addition reagents, k sequential reaction spectra, and v channels. Then preconditioning problem can be stated as [Formula: see...