THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

正しい方法がわかる臨床基本手技 : from the New England journal of medicine

New generation adsorbents for water treatment.

Large-scale electrolysis of water for hydrogen generation requires better catalysts to lower the kinetic barriers associated with the oxygen evolution reaction (OER). Although most OER catalysts are based on crystalline mixed-metal oxides, high activities can also be achieved with amorphous phases. Methods for producing amorphous materials, however, are not typically amenable to mixed-metal compositions. We demonstrate that a low-temperature process, photochemical metal-organic deposition, can produce amorphous (mixed) metal oxide films for OER catalysis. The films contain a homogeneous distribution of metals with compositions that can be accurately controlled. The catalytic properties of amorphous iron oxide prepared with this technique are superior to those of hematite, whereas the catalytic properties of a-Fe100-y-zCoyNizOx are comparable to those of noble metal oxide catalysts currently used in commercial electrolyzers.

https://science.sciencemag.org/content/sci/early/2013/03/27/science.1233638.full.pdf

Photochemical Route for Accessing Amorphous Metal Oxide Materials for Water Oxidation Catalysis

Control of spontaneously emitted light lies at the heart of quantum optics. It is essential for diverse applications ranging from miniature lasers and light-emitting diodes, to single-photon sources for quantum information, and to solar energy harvesting. To explore such new quantum optics applications, a suitably tailored dielectric environment is required in which the vacuum fluctuations that control spontaneous emission can be manipulated. Photonic crystals provide such an environment: they strongly modify the vacuum fluctuations, causing the decay of emitted light to be accelerated or slowed down, to reveal unusual statistics, or to be completely inhibited in the ideal case of a photonic bandgap. Here we study spontaneous emission from semiconductor quantum dots embedded in inverse opal photonic crystals. We show that the spectral distribution and time-dependent decay of light emitted from excitons confined in the quantum dots are controlled by the host photonic crystal. Modified emission is observed over large frequency bandwidths of 10%, orders of magnitude larger than reported for resonant optical microcavities. Both inhibited and enhanced decay rates are observed depending on the optical emission frequency, and they are controlled by the crystals’ lattice parameter. Our experimental results provide a basis for all-solid-state dynamic control
of optical quantum systems.

Controlling the dynamics of spontaneous emission from quantum dots by photonic crystals

Indium nitride (InN) sphere-shaped micro crystals and nano crystals were made using sol–gel method. The crystalline size of the samples were calculated using X-ray diffraction, which were found to increase with the increase of nitridation temperature and time. High resolution-transmission electron microscopy images exhibited the distinct sphere shape of InN with different size of micro and nanometers. The calculated band gap of InN spheres using photo luminescence and UV–visible absorption spectra, was found to be 1.2 eV. Optical phonon modes of InN were determined from micro-Raman studies.

Investigations on the structural and optical properties of sphere-shaped indium nitride (InN)

Caracterisation de NdAl 3 (BO 3 ) 4 par microanalyse par sonde electronique, spectrometrie IR et Raman

Growth and spectroscopic characterization of NdAl3(BO3)4 crystals grown using BaO-B2O3 flux

Core-shell quantum dots (QDs) have gained immense significance in various technological applications due to their unique size-dependent optical properties. However, their efficiency in lightning and display applications can be limited by fluorescence intermittency or blinking which limits the viability of the QDs. In this work, a theoretical study on the causes and mitigation process of the blinking phenomenon in core-shell QDs has been carried out. An approach to eliminate blinking behavior is to modify the traditional core-shell structure where the interface between the core and shell materials is discontinuous and abrupt. A graded alloy core-shell QD where there is a gradual transition between pure core material and pure shell material shows suppressed blinking behavior. Another alternate strategy is the growth of core-shell QDs with giant shell structures and appropriate surrounding matrix considering the traps being few nanometers away from the core. The study of the effect of fluctuations in the local environment of the QDs helps in understanding the mechanisms of blinking and hence in curtailing its effect. These approaches have been applied and analyzed to suppress the blinking phenomenon and improve the optical properties of QDs.

Suppression of Blinking and Enhancement of Optical Properties of Core-Shell Quantum Dots by Structural Formulation

Controlled release formulations of phorate prepared in a polyvinyl chloride matrix (PVC-10) provided a comparable control of the rice leaf folder, Cnaphalocrocis medinalis as compared to thiamethoxam and profenphos in field grown rice. A single application of PVC-10 at 0.75 kg a.i. ha−1 was superior to 0.5 kg a.i. ha−1 of PVC-10 and 3 applications each of thiamethoxam and profenphos controlling C. medinalis in the field. The gram yield in insecticidal treated plots was significantly higher than control, the differences being non-significant among the various treatments. Predator complex (coccinellids, spiders, ground beetles and rove beetles) was less affected with phorate PVC-10 treatments and no residues were detected in rice grains at harvest.

Jitendra Kumar

Papers

Investigations on the structural and optical properties of sphere-shaped indium nitride (InN)

Growth and spectroscopic characterization of NdAl3(BO3)4 crystals grown using BaO-B2O3 flux

Suppression of Blinking and Enhancement of Optical Properties of Core-Shell Quantum Dots by Structural Formulation

Field Appraisal of Controlled Release Formulation of Phorate Against Rice Leaf Folder

Micro Raman analysis of MOCVD grown gallium nitride epilayers irradiated with light and heavy ions