3,687 research outputs found
Catalytic activity of some palladium complexes of a phosphorus ylide and structure of a 2-phenylaniline-based palladacycle complex
No full textA six-membered N,C-palladacycle bearing the 2-phenylaniline bidentate ligand (1) and three other palladium complexes of a phosphorus ylide (2, 3 and 4) were utilized in Suzuki reactions between phenylboronic acid and a number of aryl bromides and chlorides. The complexes were found to be capable homogeneous catalysts for a variety of substrates, affording the coupled products in good to excellent yields. The structure of compound I, determined by X-ray diffraction, is also reported
Ecriture au feminin par procuration : Pierre de patience d'Atiq Rahimi
No full textThe author proposes a feminist interpretation of Pierre de patience, a novel by the afghan francophone writer Atiq Rahimi. He sees it as a francophone text come from elsewhere, as world literature, but also as a message and hope for our time and for gender equality
THE LURE OF THE IMAGE KEBOHONGAN PADA NARASI PEREMPUAN DALAM SYNGUE SABOUR PIERRE DE PATIENCE KARYA ATIQ RAHIMI
No full textThis study aims to determine the position of the author in women narration. With Rahimi’s background as a feminist, he said that with his novel he voiced the voices of Afghan women. Rahimi offered a strong female figure in the middle of the patriarchal shackles who is able to fight the system. The problem of this study is Rahimi’s ambiguity in narrating women. To determine the position of the author, the research uses the concept of the lure of the image belongs to Lidia Curti. The lure of the image is an offer provided by the author to give positions to women that are in fact not provided by them. Based on the research conducted, the results show that Rahimi keeps women as objects in a patriarchal world. In this case he is not able to pull the women out of the patriarchal zone. The space given to women by Rahimi reinforces male power. What Rahimi written in this novel is the lure of the image according to Curti’s concept which explains it as an image of women given by author or known as female gaze
Candidate Trapdoor Claw-Free Functions from Group Actions with Applications to Quantum Protocols
No full textSynthesis and Characterization of 2-Phenylaniline Cyclopalladated Complexes
No full textReaction of the dinuclear complex [Pd{kappa 2-N2',C1-2-(2'-NH2C6H4)C6H4}Cl](2) (1) with ligands (L = 4-picoline, sym-collidine) gave the six-membered palladacycles [Pd{kappa 2-N2',C1-2-(2'-NH2C6H4)C6H4}Cl(L)] (2). The complex 1 reacted with AgX (X = CF3SO3, BF4) and bidentate ligands [L-L = phen (phenanthroline), dppe (bis(diphenylphosphino)ethane), bipy(2,2'-bipyridine) and dppp (bis(diphenylphosphino) propane)] giving the mononuclear orthopalladated complexes [Pd{kappa 2-N2',C1-2-(2'-NH2C6H4)C6H4}(L-L)] (3) [L-L = phen, dppe, bipy and dppp]. These compounds were characterized by physicochemical methods, and the structure of [Pd{kappa 2-N2',C1-2-(2'-NH2C6H4)C6H4}Cl(L)] (L = sym-collidine) was determined by single-crystal X-ray analysis
Atiq Rahimi, Terre et cendres, Traduit du persan (Afghanistan) par Sabrina Nouri, 2000
No full textKhamès Djamel. Atiq Rahimi, Terre et cendres, Traduit du persan (Afghanistan) par Sabrina Nouri, 2000. In: Hommes et Migrations, n°1226, Juillet-août 2000. Au miroir du sport. pp. 115-116
Double and Reversible Alkyl Transfer from ZrBn 4 /HfBn 4 to a Diiminepyridine Ligand
No full textReaction of MBn4 (M = Zr, Hf ) with diiminepyridine ligands MeDIP, EtDIP and iPrDIP [RDIP = 2,6-(2,6-R2C6H3N=CMe)2- C5H3N] results in the transfer of two benzyl groups to the DIP imine carbon atoms, generating mixtures of rac and meso isomers of [RDIP + 2Bn]MBn2. The diastereomers could in several cases be separated by fractional crystallization, and the X-ray structures of rac and meso [EtDIP + 2Bn]ZrBn2, meso- [MeDIP + 2Bn]ZrBn2 and meso-[EtDIP + 2Bn]HfBn2 are reported. On heating either diastereomer of [EtDIP + 2Bn]ZrBn2 in solution, the other isomer grows back in, demonstrating reversibility of the alkyl transfer. Transfer to other positions of the DIP skeleton was not observed. The reaction of [EtDIP + 2Bn]ZrBn2 with two equivalents of TEMPO produced structurally characterized [EtDIP + 2Bn]Zr(Bn)(TEMPO) which shows no tendency to isomerize
Human cumulus cell sensitivity to vitrification, an ultrastructural study
No full textAbstract
Cumulus cells (CCs) play an important role in the regulation of female gamete development, meiotic maturation, oocyte-sperm interaction, capacitation and acrosome reaction. However, their role in maintaining oocyte competence after vitrification is unclear as controversial data on their protecting action against oocyte cryoinjuries are available. Here we described the effects of vitrification on the ultrastructure of human CCs collected from women undergoing assisted reproductive technologies (ARTs). In total, 50 patches of CCs, sampled from high-quality human cumulus-oocyte complexes, were randomly allocated into two groups after patient informed consent: 1, fresh CCs (controls, n = 25); 2, vitrified CCs (n = 25). Samples were then prepared and observed by transmission electron microscopy. In fresh CCs, in which small cell clusters were visible, cell membranes were joined by focal gap junctions. Microvilli were rare and short. Nuclei, mitochondria, smooth endoplasmic reticulum (SER), Golgi apparatus and lipid droplets appeared well preserved; vacuoles were scarce. After vitrification, we observed two populations of CCs: light CCs, with a smooth appearance and few short microvilli; and dark CCs, with numerous and long microvilli. In both, most of the organelles appeared similar to those of fresh CCs. Lipid droplets were denser and more numerous, with respect to fresh CCs. They were mainly located in the peri-nuclear and sub-plasmalemmal regions. Numerous packed electron-negative vacuoles were visible. The vitrification procedure did not cause alterations in the fine structure of major organelles, except for an increased amount of lipid droplets and vacuoles. This specific sensitivity of human CCs to vitrification should be considered during ARTs
Smith Professor Hillel Y. Levin offers his thoughts on the U.S. Supreme Court’s decision on U.S. v. Rahimi
No full textSmith Professor Hillel Y. Levin offers his thoughts on the U.S. Supreme Court’s decision on U.S. v. Rahimi:
What did the Supreme Court do in Rahimi?
As expected, the Court reversed the Fifth Circuit and held that when an individual has been found by a court to pose a credible threat to the physical safety of another, that individual may be temporarily disarmed consistent with the Second Amendment. The decision was 8-1, with only Justice Thomas dissenting.
On what basis did the Supreme Court decide the case?
The Court held that when looking for historical analogues of modern-day restrictions on firearms, it is not necessary to find a perfectly equivalent regulation from the Founding or post-Civil War eras. In the words of Chief Justice Roberts, the author of the majority opinion, the Second Amendment permits more than just those regulations identical to ones that could be found in 1791. It is sufficient that there be sufficient historical analogues that impose similar burdens or restrictions on the right to bear arms for similar reasons. Here, the Court concluded that the country has a tradition of disarming individuals who pose a clear threat of physical violence to another, even if not quite in the same manner as the law that was applied to Rahimi.
Does this clarify Bruen? How will it impact other cases?
This was a fairly narrow opinion. The Court kept the Bruen regime intact and gave little guidance to lower courts in applying it to other kinds of regulations. At most, the Court clarified that historical analogues need not be perfect in order to justify a modern restriction. However, lower courts will continue to struggle to determine just how similar a modern restriction must be to the historical analogue.
University of Georgia School of Law Smith Professor Hillel Y. Levin is available for further commentary at [email protected]
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