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Phlogopite in.m.ntle xenoliths and kimberlite from the Grib pipe,Arkhangelsk province,Russia:Evidence for multi-stage mantle metasomatism and origin of phlogopite in kimberlite

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Geoscience Frontiers 2019年第5期10卷 1941-1959页

作者： A.V. Kargin L.V. Sazonova A.A. nosova n.m. Lebedeva Yu.A. Kostitsyn E.V. Kovalchuk V.V. Tretyachenko Ya.S. Tikhomirova Institute of Geology of Ore Deposits PetrographyMineralogyand GeochemistryRussian Academy of Sciences (IGEM RAS)MoscowRussia Lomonosov moscow State University MoscowRussia Vernadsky Institute of Geochemistry and Analytical Chemistry of Russian Academy of Sciences MoscowRussia AC ALROSA Research Geological Prospecting Enterprise ArkhangelskRussia

We present petrography and mineral chemistry for both phlogopite,from mantle-derived xenoliths (garnet peridotite,eclogite and clinopyroxene-phlogopite rocks) and for megacryst,macrocryst and groun.m.ss flakes from the Grib kimberlite in the Arkhangelsk diamond province of Russia to provide new insights into multi-stage metasomatism in the subcratonic lithospheric mantle (SCLm) and the origin of phlogopite in *** on the analysed xenoliths,phlogopite is characterized by several *** first generation (Phl1) occurs as coarse,discrete grains within garnet peridotite and eclogite xenoliths and as a rock-forming mineral within clinopyroxene-phlogopite *** second phlogopite generation (Phl2) occurs as rims and outer zones that surround the Phl1 grains and as fine flakes within kimberlite-related veinlets filled with carbonate,serpentine,chlorite and *** garnet peridotite xenoliths,phlogopite occurs as overgrowths surrounding garnet porphyroblasts,within which phlogopite is associated with Cr-spinel and minor *** eclogite xenoliths,phlogopite occasionally associates with carbonate bearing veinlet ***,from the kimberlite,occurs as megacrysts,macrocrysts,microcrysts and fine flakes in the groun.m.ss and matrix of kimberlitic *** phlogopite grains within the kimberlite are characterised by signs of deformation and form partly fragmented grains,which indicates that they are the disintegrated fragments of previously larger ***1,within the garnet peridotite and clinopyroxeneephlogopitexenoliths,is characterised bylow Ti and Cr contents (TiO2n.m.#=100×mg/(mgtFe)>92) typical of primary peridotite phlogopite in.m.ntle peridotite xenoliths from global kimberlite *** formed during SCLm metasomatism that led to a transformation from garnet peridotite to clinopyroxene-phlogopite rocks and the crystallisation of phlogopite and high-Cr clinopyroxene megacrysts before the

关键词： mantle metasomatism Kimberlite Phlogopite mantle xenoliths megacrysts

Fluoride Processing of Titanium-Containing minerals

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Advances in.m.terials Physics and Chemistry 2012年第4期2卷 21-24页

作者： n.m. Laptash I.G. maslennikova Institute of Chemistry Far Eastern Branch of RAS Vladivostok Russia

Fluoride processing of natural ilmenite with the use of ammonium hydrogen difluoride (nH4HF2) as an effective fluorinating agent is suggested. Chemistry, composition, structure, thermal and hydrolytic properties of fluorination products were investigated. Ammonium fluoro- and oxofluorotitanates are suitable for preparing of titanium dioxide as pigmentary product or as doped by nitrogen and fluorine.

关键词： Ilmenite Fluorination Reactions Ammonium Hydrogen Difluoride Ammonium Fluoro- and Oxofluorometallates Thermal Behavior Hydrolysis n-F-TiO2.

Predicting maximum Lifespan Limits at mean.m.nopausal Age

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Journal of mathematical Research with Applications 2025年第1期 133-142页

作者： m.SUmATHI S.AnTOnY CARLA Department of mathematics N.M.S.S.Vellaichamy Nadar College Research Scholar (Part-time) Madurai Kamaraj University

The age at which a woman enters natural menopause has also been associated to death from any cause. menopause is a natural component of aging that happens between the ages of 45 and 55, with the average menopausal age being 51. Previous research has revealed the age at which women reach menopause, but there is no evidence to support the link between.m.nopause and longevity. We made a study in assessing the limits of maximum lifespan at menopausal age in our previous article. In this paper, we aim to predict the maximum lifespan of women at mean.m.nopausal age.

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社会经济加速发展与青年政策

青年研究 1989年第4期 44-48页

作者： n.m.伊林斯基刘成杉苏联共青团中央高级团校科学研究中心中国社会科学院社会学研究所主任.哲学博士教授

青年不仅属于未来而且属于现在——由于缺乏完整的科学统计和研究,不能对青年一代作出结论性的科学概括——对支配青年发展过程的趋势和规律往往发现得太晚——是考虑建立国家青年事务委员会和国家青年问题研究所的时候了。

关键词：青年加速发展共青团共产主义青年团青年组织经济

Some Arithmetic on the Hardy Sums s_2(h,k) and s_3(h,k)

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Acta mathematica Sinica,English Series 2004年第2期20卷 193-200页

作者： mümün CAn Department of mathematics Akdeniz University07058AntalyaTurkey

In this work, Rademacher’s two questions about Dedekind sums are applied to the Hardy sums s 2(h, k) and s 3(h, k). Some relations between these sums are obtained and some inequalities are given.

关键词： Dedekind Sums Hardy Sums

On the dielectric response function and dispersion relation in strongly coupled magnetized dusty plasmas

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Chinese Physics B 2018年第10期27卷 465-470页

作者： m Shahmansouri n Khodabakhshi Department of Physics Faculty of ScienceArak University

Using the generalized viscoelastic fluid model, we derive the dielectric response function in a strongly coupled dusty magnetoplasma which reveals two different dust acoustic（DA） wave modes in the hydrodyn.m.c and kinetic limits. The effects of the strong interaction of dust grains and the external magnetic on these DA modes, as well as on the shear wave are examined. It is found that both the real and imaginary parts of DA waves are significantly modified in strongly coupled dusty magnetoplasmas. The implications of our results to space and laboratory dusty plasmas are briefly discussed.

关键词： dusty plasma strongly coupled plasma magnetoplasma dielectric response function

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Atmospheric pressure gliding arc discharge plasma treatments for improving germination, growth and yield of wheat

1982年

作者：（苏）n.m.费多尔钦科

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Plasma Science and Technology 2018年第11期20卷 90-100页

作者： n C ROY m m HASAn A H KABIR m A REZA m R TALUKDER A n CHOWDHURY Plasma Science and Technology Laboratory Department of Applied Physics and Electronic EngineeringUniversity of Rajshahi Rajshahi 6205 Bangladesh Department of Agron.m. and Agricultural Extension University of Rajshahi Rajshahi 6205 Bangladesh Depatment of Botany University of Rajshahi Rajshahi 6205Bangladesh Department of Genetic Engineering and Biotechnology University of Rajshahi Rajshahi 6205Bangladesh Bangladesh Council of Scientific and Industrial Research Laboratory Rajshahi Rajshahi 6206Bangladesh

Wheat （Triticum aestivum） seeds were treated with atmospheric pressure gliding arc discharge plasmas to investigate the effects on water absorption, seed germination rate, seedling growth and yield in wheat. The surface architectures and functionalities of the seeds were found to modify due to plasma treatments. 6 rain treatment was provided 95%-100% germination rate. For the treatment duration of 3 and 9 rain the growth activity, dry matter accumulation, leaves chlorophyll contents, longest spikes, n.m.er of spikes/spikelet and total soluble protein content in shoots were improved. The grain yield of wheat was increased ,--20% by 6 min treatment with H2O/O2 plasma with respect to control.

关键词： atmospheric pressure gliding arc discharge plasmas wheat germination growth improvement total soluble protein

OH and O radicals production in atmospheric pressure air/Ar/H_2O gliding arc discharge plasma jet

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Plasma Science and Technology 2017年第12期19卷 71-80页

作者： n C ROY m R TALUKDER A n CHOWDHURY Plasma Science and Technology Laboratory Department of Applied Physics and Electronic EngineeringUniversity of RajshahiRajshahi 6205Bangladesh Bangladesh Council of Scientific and Industrial Research Laboratory Rajshahi Rajshahi 6206Bangladesh

Atmospheric pressure air/Ar/H_2O gliding arc discharge plasma is produced by a pulsed dc power supply. An optical emission spectroscopic（OES） diagnostic technique is used for the characterization of plasmas and for identifications of OH and O radicals along with other species in the plasmas. The OES diagnostic technique reveals the excitation Tx？≈？5550–9000 K, rotational Tr？≈？1350–2700 K and gas Tg？≈？850–1600 K temperatures, and electron density n？（1.1-1.9） ′101 4 cm^（-3） e under different experimental conditions. The production and destruction of OH and O radicals are investigated as functions of applied voltage and air flow rate. Relative intensities of OH and O radicals indicate that their production rates are increased with increasing Ar content in the gas mixture and applied voltage. nereveals that the higher densities of OH and O radicals are produced in the discharge due to more effective electron impact dissociation of H_2O and O_2 molecules caused by higher kinetic energies as gained by electrons from the enhanced electric field as well as by enhanced n *** productions of OH and O are decreasing with increasing air flow rate due to removal of Joule heat from the discharge region but enhanced air flow rate significantly modifies discharge maintenance properties. Besides, Tgsignificantly reduces with the enhanced air flow rate. This investigation reveals that Ar plays a significant role in the production of OH and O radicals.

关键词： reactive oxygen species(ROS) optical emission spectroscopy(OES) gliding arc discharge plasma kinetics broadening mechanism