http://repository.ias.ac.in/39608/1/49_pub.pdf

A review of imperative technologies for wastewater treatment I: oxidation technologies at ambient conditions

A review of imperative technologies for wastewater treatment II: hybrid methods

The [2 + 2] photocycloaddition is undisputedly the most important and most frequently used photochemical reaction. In this review, it is attempted to cover all recent aspects of [2 + 2] photocycloaddition chemistry with an emphasis on synthetically relevant, regio-, and stereoselective reactions. The review aims to comprehensively discuss relevant work, which was done in the field in the last 20 years (i.e., from 1995 to 2015). Organization of the data follows a subdivision according to mechanism and substrate classes. Cu(I) and PET (photoinduced electron transfer) catalysis are treated separately in sections 2 and 4, whereas the vast majority of photocycloaddition reactions which occur by direct excitation or sensitization are divided within section 3 into individual subsections according to the photochemically excited olefin.

http://pubs.acs.org/doi/pdf/10.1021/acs.chemrev.5b00723

Recent Advances in the Synthesis of Cyclobutanes by Olefin [2+2] Photocycloaddition Reactions

A review of applications of cavitation in biochemical engineering/biotechnology

CLINICAL NEUROSURGERY Edited by Barnes Wordall. Vol. 18. (Pp. 557; illustrated; £8 25.) Churchill Livingstone: Edinburgh. 1971. CLINICAL NEUROSURGERY Edited by G. T. Tindall. Vol. 19. (Pp. 598; illustrated; £12.) Churchill Livingstone: Edinburgh. 1972. The Congress of Neurosurgeons began in 1951 on the initiative of a group of younger neurosurgeons. In the last 20 years its membership has grown from 69 to over 1,000, but it has retained its original intentions and virility by a constitution which ensured that the office bearers and organizers were always young men. Residents in training are encouraged to join, financial concessions make it possible for them to attend meetings, and these are organized as an educational exercise, by inviting established authorities to give lectures on selected topics, chosen to provide a balanced programme. As a result Clinical Neurosurgery is a valuable volume which all neurosurgeons look forward to each year; it is in quite a different class from the usual conference tome, full of brief and unconnected papers of widely varying quality. As the title suggests Clinical Neurosurgery includes excellent clinical reviews but the two recent volumes include also a section of seminars on fundamental research-in volume 18 on coma and sleep, in volume 19 on basic mechanisms of memory. It is also the custom to invite a senior neurosurgical citizen as guest of honour and his two or three papers afford an opportunity for historical and philosophical reflections as well as an experienced perspective on clinical and experimental work. Add to this the refreshing presidential address, from one of the (angry?) young men of neurosurgery and it will be clear that these volumes really do include something of interest for every neurosurgeon, whatever his own interests or prejudices. It is a relief to be able so warmly to recommend these books, when the question posed by so many other books is whether anyone would really want to read them. The most recent volume has a more consistent theme than former ones, and that is 'head injury'. It includes papers on mechanisms as revealed by animal experiment and by a pathologist who visited the scene of the accident before examining the brains of head injury fatalities. There are chapters on engineering and socio-psychological aspects of accident prevention, as well as down to earth clinical accounts of metabolic disorders, testing for acoustic vestibular 36 damage, and aspects of prognosis. This is a significant contribution to the literature on head injury.

https://jnnp.bmj.com/content/jnnp/37/3/361.3.full.pdf

The working brain (an introduction to neuropsychology)

Reduction of 1,4-dimesyl entities embodied in several strained polycyclic systems with Zn–Nal–HMPA has been studied. While the dimesyl esters 9 and 15 gave exclusively C–C bond-cleaved products 10 and 24, the dimesyl esters 18 and 20 gave both the ring-cleaved products 25 and 27 as well as the reduced products 26 and 28. On the other hand, the dimesyl ester 23 afforded exclusively the reduced product 29. The different reaction course observed has been ascribed to the release of strain associated with the trinorbornene systems. The ring-cleaved product 27 has been oxidised with RuO4 to afford the dione 30. Interestingly, oxidation of the diene 27 with OsO4 was found to proceed with unprecedented chemoselectivity by oxidation of the non-conjugated methylene unit to afford the enone 31.

Strain‐Assisted Reductive Ring Cleavage: Convenient Route to Bridged Eight‐Membered Rings Present in Taxanes.

A Novel Route to Usefully Functionalized Spiro(n.4) Systems. Application to a Formal Synthesis of (.+-.)-α-Cedrene.

Supervised feature selection (FS) is used to select a discriminative and non-redundant subset of features in classification problems dealing with high dimensional inputs. In this paper, feature selection is posed akin to the set-covering problem where the goal is to select a subset of features such that they cover the instances. To solve this formulation, we quantify the local relevance (i.e., votes assigned by instances) of each feature that captures the extent to which a given feature is useful to classify the individual instances correctly. In this work, we propose to combine the instance votes across features to infer their joint local relevance. The votes are combined on the basis of geometric principles underlying classification and feature spaces. Further, we show how such instance vote combining may be employed to derive a heuristic search strategy for selecting a relevant and non-redundant subset of features. We illustrate the effectiveness of our approach by evaluating the classification performance and robustness to data variations on publicly available benchmark datasets. We observed that the proposed method outperforms state-of-the-art mutual information based FS techniques and performs comparably to other heuristic approaches that solve the set-covering formulation of feature selection.

Feature Selection for High-Dimensional Data Through Instance Vote Combining

Bicyclo(2.2.1)heptane as Cyclopentane Precursor. Part 4. Stereocontrolled Synthesis of a Potential Intermediate (VIII) to Chromophycane, Dolastane and Clavularane.

Understanding fluid dynamics and heat transfer is crucial for designing and improving various engineering systems. This study examines the heat transfer characteristics of a buoyancy-driven natural convection flow that is laminar and incompressible. The investigation also considers entropy generation (Egen) within an octagonal cavity subject to a cold cylinder inside the cavity. The dimensionless version of the governing equations and their corresponding boundary conditions have been solved numerically using the finite element method, employing triangular mesh elements for discretization. The findings indicated that incorporating a cold cylinder inside the octagonal cavity resulted in a higher heat transfer (HT) rate than in the absence of a cold cylinder. Furthermore, using the heat flux condition led to a higher average Nusselt number (Nuavg) and a lower Bejan number (Be) than the isothermal boundary condition. The results also showed that HT and Egen were more significant in the Al2O3-H2O nanofluid than the basic fluids such as air and water, and HT increased as χ increased. The current research demonstrates that employing the heat flux condition and incorporating nanoparticles can enhance the rate of HT and Egen. Furthermore, the thermo-fluid system should be operated at low Ra to achieve greater HT effectiveness for nanofluid concerns.

Goutam Saha

Papers

Strain‐Assisted Reductive Ring Cleavage: Convenient Route to Bridged Eight‐Membered Rings Present in Taxanes.

A Novel Route to Usefully Functionalized Spiro(n.4) Systems. Application to a Formal Synthesis of (.+-.)-α-Cedrene.

Feature Selection for High-Dimensional Data Through Instance Vote Combining

Bicyclo(2.2.1)heptane as Cyclopentane Precursor. Part 4. Stereocontrolled Synthesis of a Potential Intermediate (VIII) to Chromophycane, Dolastane and Clavularane.

Entropy Production Analysis in an Octagonal Cavity with an Inner Cold Cylinder: A Thermodynamic Aspect