All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the ...professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Double-blind • Conference submission management system: EDAS • Number of submissions received: 81 • Number of submissions sent for review: 75 • Number of submissions accepted: 55 • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 55/81 x 100 = 67.9% • Average number of reviews per paper: 332/75 = 4.4 • Total number of reviewers involved: 332 • Any additional info on review process: Contact person for queries: Assoc. Prof. Dr. Asral Bahari Jambek Faculty of Electronic Engineering Technology, Universiti Malaysia Perlis Email: asral@unimap.edu.my
All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the ...professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Double-blind All the received submissions were checked for plagiarism and then the editors reviewed the papers with respect to the scope and suitability for ICDIIS-20. The editors assigned independent reviewers to handle the review process. Acceptance decision is made if at least 2 independent reviewers recommended the submission for publication with minor revision. The comments of reviewers are communicated to authors for the revision. Editors cross checked the revision carried out by the authors with respect to the comments given by the reviewers, based on that the final acceptance is made. • Conference submission management system: Easy Chair • Number of submissions received: 152 • Number of submissions sent for review: 152 • Number of submissions accepted: 68 • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100): 44.74% • Average number of reviews per paper: 3 • Total number of reviewers involved: 86 • Any additional info on review process: • Contact person for queries: • Dr.S.Ramakrishnan, • Prof. and Head, • Department of Information Technology, • Dr.Mahalingam College of Engineering and Technology, • Pollachi, Tamilnadu, India • Email: ramki@drmcet.ac.in
All papers published in this volume of Journal of Physics: Conference Series have been peer reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the ...professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Double-blind Reviewer list prepared based on the expertise in different area of the conference track, consent received through email reply. Author credentials in the submitted manuscripts removed before sending for the reviewer comments. Reviewer comments communicated to authors for resubmission after corrections. • Conference submission management system: Easy Chair • Number of submissions received: 157 • Number of submissions sent for review: 102 • Number of submissions accepted:91 • Acceptance Rate (Number of Submissions Accepted / Number of Submissions Received X 100):58.6% • Average number of reviews per paper: 3 • Total number of reviewers involved:54 • Any additional info on review process: • Contact person for queries: Dr. Indranath Sarkar, JIS College of Engineering, indranath.sarkar@jiscollege.ac.in
The first copper‐catalyzed highly chemo‐, regio‐, diastereo‐, and enantioselective Kinugasa/Michael domino reaction for the desymmetrization of prochiral cyclohexadienones is described. In the ...presence of a chiral copper catalyst, alkyne‐tethered cyclohexadienones couple with nitrones to generate the chiral spirocyclic lactams with excellent stereoselectivity (up to 97 % ee, >20:1 dr). The new method provides direct access to versatile highly functionalized spirocyclic β‐lactams possessing four contiguous stereocenters, including one quaternary and one tetra‐substituted stereocenter.
Spiro staircase: Copper‐catalyzed asymmetric Kinugasa/Michael domino reactions of alkyne‐tethered cyclohexadienones and nitrones provide a direct stereoselective approach to spirocyclic β‐lactams possessing four contiguous stereocenters.
•Reduction mechanism changed from three-dimensional diffusion to interfacial chemical reaction with increase of temperature.•Waste plastic char presents better reduction reactivity during the second ...reduction regime than Coal.•CaO can lower reduction reaction activation energy and reaction initial temperature.
The effective utilization of waste plastics is the key technology for environmental protection. Waste plastic char was proposed as a reductant for recovering valuable metals from copper slag. Reaction reactivity, mass-loss behavior and thermokinetics of copper slag were studied by FTIR and thermogravimetric analyzer. The main functional groups of waste plastic char are benzene ring, C-O and –OH. Mass-loss behavior evaluation method was proposed based on calculating and detection of sample’s total mass-loss and reductant mass-loss.
With temperature increasing, reaction mechanism transformed. Three-dimension diffusion and interface’s chemical reaction rate are restrictive steps for the first and the second reaction regime, respectively. For waste plastic char, activation energy of the first regime and second regime are about 289.5 ~ 276.2 kJ/mol and 584.5 ~ 709.9 kJ/mol, respectively. CaO changed the second regime’s activation energy. When CaO added, activation energy of waste plastic char and coal decreased by 119.8 ~ 121.5 kJ/mol and 100.0 ~ 113.6 kJ/mol respectively. Waste plastic char presents better reduction reactivity in the second reduction regime than coal. This research makes it possible for recycling of municipal organic wastes and iron containing slags.
The bifunctional quinine‐catalyzed stepwise (3+2) cycloaddition for the enantioselective construction of spirooxindole‐fused cyclopentacchromen‐4‐ones is developed. The reactions of ...3‐homoacylcoumarins and alkylidene oxindole electrophiles generate aforementioned spirooxindole‐chromenone adducts bearing five contiguous stereocenters, of which one is the spiro all‐carbon quaternary stereocenter in high yields (up to 99%) with excellent stereoselectivities (up to >20:1 dr and 99% ee). This methodology was investigated for three different alkylidene oxindole electrophiles and could also be practically demonstrated on a gram scale. Mechanistic investigations revealed that the (3+2) cycloaddition for the enantioselective synthesis of spirooxindole‐fused cyclopentacchromen‐4‐ones is proceeding via a stepwise reaction pathway.
Redox processes mediated by biochar(BC) enhanced the transformation of Cr(VI), which is largely dependent on the presence of PFRs as electron donors. Natural or artificial dopants in BC’s could ...regulate inherent carbon configuration and PFRs. Until recently, the modulation of PFRs and transformation of Cr(VI) in BC by nonmetal-heterocyclic dopants was barely studied. In this study, changes in PFRs introduced by various nitrogen-dopants within BC are presented and the capacity for Cr(VI) transformation without light was investigated. It was found N-dopants were effectively embedded in carbon lattices through activated-Maillard reaction thus altering their charge and PFRs. Transformation of Cr(VI) in N doped biochar relied on mediated direct reduction by surface modulatory PFRs. The kinetic rate of transformation of Cr(VI) was increased 1.4–5 fold in N-BCs compared to nondoped BCs. Theortical calculation suggested a deficiency in surface electrons induced Lewis acid–base bonding which could acted as a bridge for electron transfer. Results of PCA and orbital energy indicated a colinear relationship between PFRs and pyrrolic N, as well as its dual-mode transformation of Cr(VI). This study provides an improved understanding of how N-doped BC contributes to the evolution of PFRs and their corresponding impacts on the transformation of Cr(VI) in environments.
Involving eight electron transfer process and multiple intermediates of nitrate (NO3−) reduction reaction leads to a sluggish kinetic and low Faradaic efficiency, therefore, it is essential to get an ...insight into the reaction mechanism to develop highly efficient electrocatalyst. Herein, a series of reduced‐graphene‐oxide‐supported RuCu alloy catalysts (RuxCux/rGO) are fabricated and used for the direct reduction of NO3− to NH3. It is found that the Ru1Cu10/rGO shows the ammonia formation rate of 0.38 mmol cm−2 h−1 (loading 1 mg cm−2) and the ammonia Faradaic efficiency of 98% under an ultralow potential of −0.05 V versus Reversible Hydrogen Electode (RHE), which is comparable to Ru catalyst. The highly efficient activity of Ru1Cu10/rGO can be attributed to the synergetic effect between Ru and Cu sites via a relay catalysis, in which the Cu shows the exclusively efficient activity for the reduction of NO3− to NO2− and Ru exhibits the superior activity for NO2− to NH3. In addition, the doping of Ru into Cu tunes the d‐band center of alloy and effectively modulates the adsorption energy of the NO3− and NO2−, which promotes the direct reduction of NO3− to NH3. This synergetic electrocatalysis strategy opens a new avenue for developing highly efficient multifunctional catalysts.
Converting NO3− to NH3 with renewable energy is of great practical significance to balance the environmental problems and economic benefits. Ru1Cu10 alloy exhibits high activity for direct reduction of NO3− to NH3 under an ultralow potential due to a relay effect on Cu (NO3− to NO2−) and Ru (NO2− to NH3) sites.
Despite the unquestionable empirical success of quantum theory, witnessed by the recent uprising of quantum technologies, the debate on how to reconcile the theory with the macroscopic classical ...world is still open. Spontaneous collapse models are one of the few testable solutions so far proposed. In particular, the continuous spontaneous localization (CSL) model has become subject of intense experimental research. Experiments looking for the universal force noise predicted by CSL in ultrasensitive mechanical resonators have recently set the strongest unambiguous bounds on CSL. Further improving these experiments by direct reduction of mechanical noise is technically challenging. Here, we implement a recently proposed alternative strategy that aims at enhancing the CSL noise by exploiting a multilayer test mass attached on a high quality factor microcantilever. The test mass is specifically designed to enhance the effect of CSL noise at the characteristic length rc=10−7 m. The measurements are in good agreement with pure thermal motion for temperatures down to 100 mK. From the absence of excess noise, we infer a new bound on the collapse rate at the characteristic length rc=10−7 m, which improves over previous mechanical experiments by more than 1 order of magnitude. Our results explicitly challenge a well-motivated region of the CSL parameter space proposed by Adler.
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