239,632 research outputs found
LI R 9.3 m/s
No full textSimulation vs experimental testing output comparison for the Hybrid III head form linear impacts (LI) impact location R 9.3 m/s
LI R 7.4 m/s
No full textSimulation vs experimental testing output comparison for the Hybrid III head form linear impacts (LI) impact location R 7.4 m/s
LI R 5.5 m/s
No full textSimulation vs experimental testing output comparison for the Hybrid III head form linear impacts (LI) impact location R 5.5 m/s
CORAK TAFSI<R S{U<FI< IMA<M AL-GAZA<LI< (Kajian Kitab Tafsi>r al-Ima>m al-Gaza>li> Karya Muha{ mmad al-Raih{a>ni>)
No full textKarya tafsir dari al-Gaza>li> tidak banyak dibahas dan/atau dikenal oleh
banyak pengkaji tafsir, sebagai al-Gaza>li> adalah ulama besar yang karya-karyanya
banyak mempengaruhi perkembangan keilmuan Islam, termasuk keilmuan tashawuf,
namun, belum ada yang melakukan kajian terhadap tafsiran al-Gaza>li> terhadap
problem-problem tashawuf yang ada. Saat ini, Muh{ammad al-Raih{a>ni> telah
mengumpulkan tafsiran-tafsiran al-Gaza>li> tersebut melalui karyanya berjudul Tafsi>r
al-Ima>m al-Gaza>li>.
Fokus penelitian ini mengenai corak tafsir sufi dari Ima>m al-Gaza>li> dalam
kitab Tafsi>r al-Ima>m al-Gaza>li> karya Muh{ammad al-Raih{a>ni>. Penelitian ini
termasuk dalam kategori penelitian kepustakaan (library research) dengan
menggunakan metode analisis data deskriptif-analitis.
Hasil penelitian ini adalah Pertama, Penafsiran al-Gaza>li> di dalam kitab
Tafsi>r al-Ima>m al-Ghaza>li > terhadap beberapa ayat Al-Qur’an tidak terlepas dari
tashawuf sunni-nya, hal ini dapat dilihat misalnya ketika al-Gaza>li> menafsirkan ayat
ایاك نعبد وایاك نستعین“ ”, al-Gaza>li> menafsirinya dengan pendekatan al-Takhaliyah dan
al-Tah}aliyah. Kedua, tasawuf Imam al-Gaza>li> bisa memberikan solusi terhadap
kecenderungan masyarakat modern yang merasa terasing dan secara psikologis
menderita akibat berbagai tantangan, persaingan, dan berbagai dinamika sosial itu,
karena tashawuf Imam al-Gaza>li> mengajak kita untuk menyeimbangkan aktivitas
jasmani dengan kontemplasi ruhani
Structural Changes in Li2MnO3 Cathode Material for Li-Ion Batteries
No full textStructural changes in Li2MnO3 cathode material for rechargeable Li-ion batteries are investigated during the first and 33 rd cycles. It is found that both the participation of oxygen anions in redox processes and Li+-H+ exchange play an important role in the electrochemistry of Li2MnO3. During activation, oxygen removal from the material along with Li gives rise to the formation of a layered MnO2-type structure, while the presence of protons in the interslab region, as a result of electrolyte oxidation and Li+-H+ exchange, alters the stacking sequence of oxygen layers. Li re-insertion by exchanging already present protons reverts the stacking sequence of oxygen layers. The re-lithiated structure closely resembles the parent Li2MnO3, except that it contains less Li and O. Mn4+ ions remain electrochemically inactive at all times. Irreversible oxygen release occurs only during activation of the material in the first cycle. During subsequent cycles, electrochemical processes seem to involve unusual redox processes of oxygen anions of active material along with the repetitive, irreversible oxidation of electrolyte species. The deteriorating electrochemical performance of Li2MnO3 upon cycling is attributed to the structural degradation caused by repetitive shearing of oxygen layers. Structural changes in Li2MnO3 provide evidence for the unusual electrochemical processes such as Li+-H+ exchange and the participation of oxygen anions in redox reactions. The observed decline in the electrochemical performance of the material upon cycling, mainly attributed to the Li+-H+ exchange and associated structural changes, also provides a global explanation for the reported cycling behavior of Li2MnO3-containing Li-rich cathode materials. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Rice ragged stunt oryzavirus genome segments S7 and S10 encode non-structural proteins of M(r) 68 025 (Pns7) and M(r) 32364 (Pns10) : brief report
No full textThe nucleotide sequences of genome segments S7 and S10 of a Thai-isolate of rice ragged stunt virus (RRSV) were determined. The 1938 bp S7 sequence contains a single large open reading frame (ORF) spanning nucleotides 20 to 1 843 that is predicted to encode a protein of M(r) 68 025. The 1 162 bp S10 sequence has a major ORF spanning nucleotides 142 to 1 032 that is predicted to encode a protein of M(r) 32364. This S10 ORF is preceded by a small ORF (nt 20-55) which is probably a minicistron. Coupled in vitro transcription-translation from the two major ORFs gave protein products of the expected sizes. However, no protein was visualised from S10 when the small ORF sequence was included. Proteins were expressed in Escherichia coli from the full length ORF of S7 (P7) and from a segment of the S10 ORF (P10) fused to the ORF of glutathione S-transferase (GST). Neither fusion protein was recognised by polyclonal antibodies raised against RRSV particles. Furthermore, polyclonal antibodies raised against GST-P7 fusion protein did not recognise any virion structural polypeptides. These data strongly suggest that the proteins P7 and P10 do not form part of RRSV particle. This is further supported by observed sequence homology (though very weak) of predicted
Synthesis of the amides M[N(SiMetBu₂)(SitBu₃)] (M = Li, Na) by N₂-elimination reaction of the triazenides M[tBu₃SiNNNSiMetBu₂] (M= Li, Na)
No full textThe thermolabile triazenides M[tBu3SiNNNSiMetBu2] (M = Li, Na) are accessible from the reaction of tBu2MeSiN3 with the silanides MSitBu3 (M = Li, Na) at −78 °C in THF. At r. t. N2 elimination from the triazenides M[tBu3SiNNNSiMetBu2] (M = Li, Na) takes place with the formation of M[N(SiMetBu2)(SitBu3)] (M = Li, Na). X-Ray quality crystals of Li(THF)[N(SiMetBu2)(SitBu3)] (orthorhombic, Pna21) are obtained from a benzene solution at ambient temperature. In contrast to the structures of the unsolvated silanides MSitBu3 (M = Li, Na), the THF adduct Li(THF)3SitBu3 is monomeric in the solid state (orthorhombic, Pna21)
Improved electrochemical performance of LiMO2 (M=Mn, Ni, Co)-Li2MnO3 cathode materials in ionic liquid-based electrolyte
No full textLithium bis(trifluoromethanesulfonyl)imide (LiTFSI) in N-butyl-N- methylpyrrolidinium bis(fluorosulfonyl)imide (PYR14FSI) (1:9 in molar ratio) is successfully tested as electrolyte for the high voltage LiMO 2-Li2MnO3 (cathode)/lithium (anode) cells at elevated temperature (40 C). Compared to conventional electrolytes, such as 1 M LiPF6 solution in the mixed solvent of ethylene and dimethyl carbonate (EC:DMC = 1:1), the use of PYR14FSI-LiTFSI electrolyte results in a net improvement of LiMO2-Li2MnO3 cycling stability while granting comparable initial capacity. In addition, the ionic conductivity of the ionic liquid-based electrolyte at 40 C is high enough to sustain the excellent rate capability of this cathode material. Li/LiMO 2-Li2MnO3 cells delivered initial capacity exceeding 200 mA h g-1 at high current rate (2 C) while retaining 94% of the initial capacity after 100 cycles. Differential capacity versus potential analysis and post-mortem characterization by scanning electron microscope, X-ray diffraction and were carried out to explain the improved performance of LiMO2-Li2MnO3 in the IL-based electrolyte. © 2013 Elsevier B.V. All rights reserved
Cu3P binary phosphide: Synthesis via a wet mechanochemical method and electrochemical behavior as negative electrode material for lithium-ion batteries
No full textMechanochemical synthesis of Cu3P in the presence of n-dodecane results in a material with a secondary particle size distribution of 10 μ m, secondary particles which consist of homogeneously agglomerated 20 nm primary particles. The electrochemical performance of Cu3P with lithium is infl uenced by the reaction depth, in other words by the lower potential cut-off. During the electrochemical reaction, the displacement of copper by lithium from the Cu3P structure until the formation of Li3 P and Cu deteriorates the capacity retention. Improved performance was obtained when the charge potential was limited to 0.50 V (vs. Li/Li+) and the formation of the Li x Cu 3-x P phase (0 = × = 2). In this case, when the potential is limited to 0.5 V, the capacity is stable for more than 50 cycles. Acceptable electrochemical performances in Li-ion cells within the voltage range 0.50-2.0 V (vs. Li/Li+) were shown when Cu3P was used as an anode and Li 1.2 (Ni0.13Mn0.54Co0.13)O 2and LiNi0.5Mn1.5O4 as positive electrode materials. © 2013 WILEY-VCH Verlag GmbH and Co
Structural changes in a Li-rich 0.5Li2MnO3∗0.5LiMn0.4Ni0.4Co0.2O2 cathode material for Li-ion batteries: A local perspective
No full textLocal structural changes in a Li-rich 0.5Li2MnO3∗0.5LiMn0.4Ni0.4Co0.2O2 cathode material are investigated using X-ray absorption spectroscopy (XAS). The element-selective nature of XAS revealed the composite structure of the material, where both Li2MnO3 and LiMn0.4Ni0.4Co0.2O2 components exist as separate domains and also exhibit a distinct electrochemical response. An irreversible oxygen release from Li2MnO3 domains contributes to a large irreversible capacity delivered by the material during activation and gives rise to the formation of a layered MnO2-type structure. Lithium reinsertion into this layered MnO2-type structure during discharge reforms the original Li2MnO3-type structure, which is lithium and oxygen deficient. The average valence state of Mn in Li2MnO3 domains remains unchanged at 4+ during charge and discharge, suggesting an unusual participation of oxygen anions of Li2MnO3 domains in redox processes. On the contrary, electrochemical processes in LiMn0.4Ni0.4Co0.2O2 domains involve conventional redox processes of transition-metal (TM) ions. In addition to Ni2+/Ni4+ and Co3+/Co4+ redox reactions, a small amount of Mn3+ detected in LiMn0.4Ni0.4Co0.2O2 domains also participates in electrochemical processes via a Mn3+/Mn4+ redox reaction. All structural modifications introduced into the material during activation are recovered upon discharge to 2.5 V, except those caused by the permanent removal of oxygen from Li2MnO3 domains
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