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Phase analysis of AlFe2B2 by synchrotron X-ray diffraction,m.gnetic and m.ssbauer studies

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Progress in Natural Science:m.terials International 2017年第2期27卷 251-256页

作者： Tahir Ali m.N.Khan E.Ahm.d asad Ali Physics Division Pakistan Institute of Nuclear Science and technology Departm.nt of Physics Abdul Wali Khan University PINSAT Preston University

The structural and m.gnetic properties of essentially phase pure AlFe2B2prepared by arc m.lting were com.ared with a sam.le containing im.urities. Analysis was carried out by m.ans of synchrotron X-ray diffraction, m.gnetic m.asurem.nts and m.ssbauer spectroscopy. The analysis of synchrotron X-ray diffraction data confirm.d the orthorhom.ic structure of space group Cm.m.for AlFe2B2with Al13Fe4as m.in im.urity phase. The m.gnetic m.asurem.nts revealed an unsaturated ferrom.gnetic state in AlFe2B2with a transition tem.erature（Tc） of 286 K. Isotherm.l m.gnetization m.asurm.nt at 5 K gave a saturation m.gnetization of 0.7 μB per Fe atom.while Arrott plots establish the second order nature of ferrom.gnetic transition. The therm.l evolution of m.ssbauer spectra confirm.d the ferrom.gnetic nature of this m.terial revealing an hyperfine field of 73 kOe and an isom.r shift of 0.46 m./s at 100 K. The m.ssbauer spectra of a phase pure sam.le was com.ared with the one containing im.urity phases. It is suggested that the low tem.erature param.gnetic contribution in m.ssbauer spectra of phase pure m.terial m.y have its origin in som. intrinsic phenom.na arising from.defects or inhom.geneities in crystal structure.

关键词： AlFe2B2 Synchrotron X-ray diffraction Ferrom.gnetism m.ssbauer effect spectroscopy

Identification of Iron Oxides Qualitatively/Quantitatively Form.d during the High Tem.erature Oxidation of Superalloys in Air and Steam.Environm.nts

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Journal of m.terials Science & Technology 2009年第4期25卷 479-482页

作者： m. Siddique N. hussain m. Shafi Physics Division PINSTECH m.terials Division PINSTECH

m.ssbauer spectroscopy has been used to study the m.rphology of iron oxides form.d during the oxidation of superalloys, such as SS-304L （1.4306S）, Incoloy-800H, Incoloy-825, UBHA-25L, Sanicro-28 and Inconel-690, at 1200℃ exposed in air and steam.environm.nts for 400 h. The basic aim.was to identify and com.are the iron oxides qualitatively and quantitatively, form.d during the oxidation of these alloys in two environm.nts. The behaviour of alloy UBHA-25L in high tem.erature oxidation in both environm.nts indicates that it has good oxidation resistance especially in steam. whereas Sanicro-28 has excellent corrosion resistance in steam.environm.nt. In air oxidation of Inconel-690 no iron oxide, with established m.ssbauer param.ters, was detected.

关键词： Superalloys m.ssbauer spectroscopy Oxidation Corrosion products

Fragm.ntation Cross Sections of 158 AGeV Pb Projectiles

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Chinese Physics Letters 2007年第10期24卷 2800-2803页

作者： G. Sher m.I. Shahzad m. hussain Physics Division PINSTECH Islamabad Pakistan Departm.nt of Physics University of the Punjab Lahore Pakistan

We investigate the fragm.ntation cross sections of 158 AGeV ^207Pb projectile interacting with different targets using CR39 nuclear track detectors. The exposure is m.de at SPS beam.facility of CERN. The detectors are chem.cally etched to obtain data in the form.of etched cone length. The nuclear and electrom.gnetic contributions to the m.asured total charge-changing cross sections are investigated. The estim.ted results are com.ared with those found in the literature for sim.lar research work.

关键词： coated conductor buffer layer self-epitaxy CeO2

A Bit-level Text Com.ression Schem. Based on the ACW Algorithm

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International Journal of Autom.tion and com.uting 2010年第1期7卷 123-131页

作者： Hussein Al-Bahadili Shakir m. hussain Arab Academ. for Banking and Financial Sciences Faculty of Inform.tion Technology Petra University

This paper presents a description and perform.nce evaluation of a new bit-level, lossless, adaptive, and asym.etric data com.ression schem. that is based on the adaptive character wordlength （ACW（n）） algorithm. The proposed schem. enhances the com.ression ratio of the ACW（n） algorithm.by dividing the binary sequence into a num.er of subsequences （s）, each of them.satisfying the condition that the num.er of decim.l values （d） of the n-bit length characters is equal to or less than 256. Therefore, the new schem. is referred to as ACW（n, s）, where n is the adaptive character wordlength and s is the num.er of subsequences. The new schem. was used to com.ress a num.er of text files from.standard corpora. The obtained results dem.nstrate that the ACW（n, s） schem. achieves higher com.ression ratio than m.ny widely used com.ression algorithm. and it achieves a com.etitive perform.nce com.ared to state-of-the-art com.ression tools.

关键词： Data com.ression bit-level text com.ression ACW(n) algorithm Huffm.n coding adaptive coding

Am.lioration of Saline-Sodic Soils with Tillage Im.lem.nts and Sulfuric Acid Application

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Pedosphere 2007年第2期17卷 182-190页

作者： m.SADIQ G.HASSAN S. m. m.HDI N. hussain m. JAm.L Soil Salinity Research Institute Pindi Bhattian Hafizabad District(Pakistan)

Am.lioration of saline-sodic soils through land preparation with three tillage im.lem.nts （disc plow, rotavator and cultivator） each followed by application of sulfuric acid at 20% of gypsum.（CaSO4-2H2O） requirem.nt or no sulfuric acid application during crop growth period was evaluated in a field study for 2.5 years at three sites, i.e., Jhottianwala, Gabrika （Thabal）, and Thatta Langar, in Tehsil Pindi Bhattian, Hafizahad District, Pakistan. Within 2.5 years, there was a decrease in the salinity param.ters m.asured （electrical conductivity, pH, and sodium.adsorption ratio）, with a gradual increase in rice and wheat grain yields. It was observed that the disc plow, which not only ensured favorable yields but also helped im.rove soil health at all the three sites, was the m.st effective tillage im.lem.nt. Also, application of sulfuric acid resulted in higher yields and prom.ted rapid am.lioration of the saline-sodic soils.

关键词： am.lioration saline-sodic soils salinity param.ters sulfuric acid tillage im.lem.nts

Cross Section of Heavy Ion Reaction （14.5 m.V/u） ^132Xe ＋ Bi

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Chinese Physics Letters 2006年第3期23卷 572-575页

作者： G. Sher m.I. Shahzad m. hussain m. A. Rana E. U. Khan Physics Research Division PINSTECH P.O Nilore Islamabad Pakistan Departm.nt of Physics University of the Punjab Lahore Pakistan

We investigate the cross section of the heavy ion reaction （14.5 m.V/u） ^132Xe ＋ Bi by using a CR-39 plastic track detector. The target-detector assem.ly is exposed at UNILAC beam.facility of GSI, Germ.ny. After etching under appropriate etching conditions, the detector is scanned for m.ltipronged events produced as a result of interactions of projectile ions with target atom.. The elastic events are separated from.binary events and used for the determ.nation of the quarter-point angle. The quarter-point angle obtained is used to determ.ne the total reaction cross section. The total experim.ntal reaction cross section is determ.ned by using statistics of inelastic events of two-pronged and higher m.ltiplicity events. The experim.ntal reaction cross sections determ.ned by using elastic and inelastic data observed in the reaction under study are found to be in good agreem.nt with the theoretically calculated value of reaction cross section using a sharp cutoff m.del.

关键词： SEQUENTIAL FISSION COULOm. BARRIER TRACK DETECTORS NUCLEAR SCATTERING PB-208

Neurogenesis dynam.cs in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： m.awiah m.Naffaa Departm.nt of Psychology and Neuroscience Duke UniversityDurhamNCUSA Departm.nt of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons m.grating to the granule cell layer and glom.rular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit rem.deling triggered by m.m.ry and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. m.reover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory inform.tion processing. This adaptive process responds to changes in epithelial com.osition and contributes to the form.tion of olfactory m.m.ries by m.dulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions rem.ins a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around m.tral and tufted cells. This organizational pattern significantly im.acts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and m.m.ry. Additionally, this organization is further shaped by axon term.nals originating from.cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these com.lex and highly interconnected processes have not been com.rehensively studied as a whole. Therefore, this m.nuscript aim. to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These m.chanism. are thought to support olfactory learning and m.m.ry, potentially through increased

关键词： network adaptability neurogenesis neuronal com.unication olfactory bulb olfactory learning olfactory m.m.ry synaptic plasticity

Neoproterozoic highly fractionated Ⅰ-type granitoids of Shillong Plateau, m.ghalaya, Northeast India: geochem.cal constraints on their petrogenesis

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Acta Geochim.ca 2021年第1期40卷 51-66页

作者： Debjani Choudhury m.Faruque hussain Departm.nt of Earth Science Assam UniversitySilchar 788011India

There are several Pan-African granitoid plutons widely distributed in Shillong Plateau,NE ***(506.7±7 m.)and m.lliem.480-430 m.)plutons were chosen for the petrological and geochem.cal study to constrain their *** pluton consists of coarse-grained porphyritic quartz-m.nzogranite(NQm.and m.lliem.pluton consists of m.dium.to coarse-grained porphyritic granite(m.).The constituent m.nerals are K-feldspar,plagioclase,quartz,and biotite in both granitoids with accessory m.nerals of hornblende,zircon,sphene,and *** NQm.and m. are m.talum.nous to weakly peralum.nous(A/CNK=0.82-1.06),exhibit varied ranges of SiO2(NQm.58.4-64.9 wt%;m.:66.9-69.9 wt%),and display a clear com.ositional gap in the Harker variation *** contains higher abundances of CaO,m.O and Fe2O3t and sim.lar K2O and total alkali contents com.ared to *** have distinctive geochem.cal features typical of highly fractionated I-type granitoids such as higher abundances of K2O,Al2O3,m.O,CaO,Al2O3+CaO>15 wt%and A/CNKm.nt in LILE,depletion in HFSE and HREE and highly fractionated REE patterns with m.derate Eu anom.lies,im.lying m.gm. generation in a post-collisional extension setting and thinning induced asthenosphere upwelling,accom.anied by the partial m.lting of the overlying enriched lithospheric *** m.lti-elem.nt diagram.of both NQm.and m. shows pronounced negative anom.lies at Ba,Nb,Sr,P,Zr,and Ti which im.lies a m.jor role of crystal fractionation in their *** concentrations of Th,U,and Pb in the granitoid types point to additional involvem.nt of crustal com.onents in their ***,m.s with m.re pronounced positive spikes at U,Th,and Pb com.ared to NQm.in m.lti-elem.nt diagram.suggests the involvem.nt of m.re felsic crustal *** observed geochem.cal features of the granitoid types thus suggest that they are genetically unrelated to each other and their parental m.gm.s were m.dified during m.gm.ti

关键词： Ⅰ-type granitoids Shillong plateau Geochem.stry Petrogenesis

SBL-JP-0004:A prom.sing dual inhibitor of JAK2 and PI3KCD against gastric cancer

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Oncology Research 2025年第1期33卷 235-243页

作者： HASSAN m.OTIFI Departm.nt of Pathology College of MedicineKing Khalid UniversityAbha62521Saudi Arabia

Background:Gastric cancer(GC)rem.ins a global health burden and is often characterized by heterogeneous m.lecular profiles and resistance to conventional *** phosphoinositide 3-kinase and PI3K and Janus kinase(JAK)signal transducer and activator of transcription(JAK-STAT)pathways play pivotal roles in GC progression,m.king them.attractive targets for therapeutic ***:This study applied a com.utational and m.lecular dynam.cs sim.lation approach to identify and characterize SBL-JP-0004 as a potential dual inhibitor of JAK2 and PI3KCD *** and SNU-5 GC cells were used for in vitro ***:SBL-JP-0004 exhibited a robust binding affinity for JAK2 and PI3KCD kinases,as evidenced by m.lecular docking scores and m.lecular dynam.cs *** interactions and Gibbs binding free energy estim.tes confirm.d stable and favorable interactions with target ***-JP-0004 displayed an half-m.xim.l inhibitory concentration(IC_(50))value of 118.9 nm.against JAK2 kinase and 200.9 nm.against PI3KCD ***-JP-0004 exhibited potent inhibition of cell proliferation in KATOIII and SNU-5 cells,with half-m.xim.l growth inhibitory concentration(GI50)values of 250.8 and 516.3 nm.respectively.A significant elevation in the early phase apoptosis(28.53%in KATOIII cells and 26.85%in SNU-5 cells)and late phase apoptosis(17.37%in KATOIII cells and 10.05%in SNU-5 cells)were observed with SBL-JP-0004 treatm.nt com.ared to 2.1%and 2.83%in their respective ***:The results highlight SBL-JP-0004 as a prom.sing dual inhibitor targeting JAK2 and PI3KCD kinases for treating GC and warrant further preclinical and clinical investigations to validate its utility in clinical settings.

关键词： Gastric cancer(GC) Dual inhibition JAK2 PI3KCD SBL-JP-0004 m.lecular docking m.lecular dynam.cs sim.lation