Induced Ferromagnetic Order of Graphdiyne Semiconductors by Introducing a Heteroatom

To date, the realization of ferromagnetism in two-dimensional carbon semiconductors containing only sp electrons has remained a challenge for spintronics. Here, we utilize the atomic-level functionalization strategy to obtain three carbon matrix materials by accurately introducing different light elements (H, F, Cl) into graphdiyne's benzene ring. Their magnetic and conductive characteristics are thoroughly clarified via physical property measurements and DFT calculations. All of these carbon matrix materials retain their excellent intrinsic semiconductor properties. In particular, compared with the paramagnetism of HsGDY and ClsGDY, a robust ferromagnetic ordering as well as high mobility of up to 320 cm2 V−1 s −1 was observed in FsGDY, successfully realizing a ferromagnetic semiconductor. Through theory calculations, this unique ferromagnetic coupling can be attributed to the most striking charge transfer between carbon and fluorine atoms, demonstrating the advantages of controllable fabrication. These results not only reveal the important role of atomic-scale doping/substitution in optimizing graphdiyne material but also create new possibilities for manipulating spins and charges in 2D carbon materials.This study was supported by the National Natural Science Foundation of China (51802324, 21790050, 21790051, 51822208, 21771187), the Frontier Science Research Project (QYZDB-SSW-JSC052) of the Chinese Academy of Sciences, and the Taishan Scholars Program of Shandong Province (tsqn201812111)

Expert Consensus on Microtransplant for Acute Myeloid Leukemia in Elderly Patients -Report From the International Microtransplant Interest Group

Recent studies have shown that microtransplant (MST) could improve outcome of patients with elderly acute myeloid leukemia (EAML). To further standardize the MST therapy and improve outcomes in EAML patients, based on analysis of the literature on MST, especially MST with EAML from January 1st, 2011 to November 30th, 2022, the International Microtransplant Interest Group provides recommendations and considerations for MST in the treatment of EAML. Four major issues related to MST for treating EAML were addressed: therapeutic principle of MST (1), candidates for MST (2), induction chemotherapy regimens (3), and post-remission therapy based on MST (4). Others included donor screening, infusion of donor cells, laboratory examinations, and complications of treatment

The Influence of Diabetes Mellitus on Patients Undergoing Primary Total Lower Extremity Arthroplasty: A Systematic Review and Meta-Analysis

Background. Diabetes mellitus (DM) is a common disease that has an adverse impact on most orthopedic surgeries, and its prevalence has gradually increased in recent years. We aim to investigate the influence of DM on comorbidities and complications of patients undergoing primary total lower extremity arthroplasty. Methods. PubMed, Embase, Cochrane Library, Medline, and Web of Science were systematically searched for relevant studies published before December 2019. Demographic data, comorbidities, and postoperative complications after primary total hip arthroplasties (THA) or primary total knee arthroplasties (TKA) were assessed between DM and non-DM patients. Meta-analysis was conducted using Review Manager 5.3, and forest plots were drawn for each variable. Results. A total of 1,560,461 patients (215,916 patients with DM and 1,344,545 patients without DM) from 23 studies were included in this meta-analysis. The incidences of several preoperative comorbidities (hypertension (HTN), kidney disease, cardiac and cerebrovascular disease) were generally higher in patients with DM. Moreover, DM patients had a higher rate of postoperative complications (superficial and deep infection, deep vein thrombosis (DVT), and in-hospital mortality) compared to non-DM patients. Conclusions. DM patients were more likely to suffer from comorbidities and had a higher risk of complications in total lower extremity arthroplasty compared to non-DM patients. It is necessary to identify DM and control hyperglycemia in the perioperative period to prevent postoperative complications in patients with DM

Li3PO4-doped Li7P3S11 glass-ceramic electrolytes with enhanced lithium ion conductivities and application in all-solid-state batteries

70Li(2)S.(30-x)P2S5.xLi(3)PO(4) (mol%) amorphous powders are prepared by a high-energy ball milling technique, and the glass-ceramics are obtained by the crystallization of as-prepared amorphous samples. The XRD patterns show that a crystalline phase with a Li7P3S11 structure is obtained for x <= 3, while a structure change is observed for x = 5. The Li+-ion conductivity is enhanced by the substitution of Li3PO4 for P2S5, and the 70Li(2)S center dot 29P(2)S(5)center dot 1Li(3)PO(4) glass-ceramics exhibit the highest total conductivity of 1.87 x 10(-3) S cm(-1) at 25 degrees C and the lowest activation energy of 18 kJ mol(-1). The LiCoO2 in the all-solid-state cell of In-Lit 70Li(2)S center dot 29P(2)S(5)center dot 1Li(3)PO(4)/LiCoO2 exhibits a discharge capacity of 108 mAh g(-1), which is 20% higher than that in the In-Li/70Li(2)S center dot 30P(2)S(5)/LiCoO2 cell. The higher discharge capacity of the LiCoO2 electrode is attributed to the higher Li-Lion conductivity of the solid electrolyte and lower interface resistance of electrode-electrolyte. (C) 2015 Elsevier B.V. All rights reserved

Synthesis and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 cathodes in lithium-ion and all-solid-state lithium batteries

LiNi1/3Co1/3Mn1/3O2 cathodes have been prepared by a solid-state reaction process. The effects of calcination and post-annealing temperature on electrochemical performances were systematically investigated for both of the lithium-ion batteries with liquid electrolytes and all-solid-state lithium batteries with sulfide solid electrolytes. The particle size of the LiNi1/3Co1/3Mn1/3O2 materials increases with calcination temperatures, whereas after calcination, the shape and size of LiNi1/3Co1/3Mn1/3O2 particles were independent of post-annealing temperatures. The LiNi1/3Co1/3Mn1/3O2 calcinated at 850 A degrees C and followed by post-annealing at 800 A degrees C maintains 97.6 % capacity retention after 30 cycles and has a capacity of 117 mAh g(-1) at a current of 5 C (current density of 24.1 mA/cm(2)) in a voltage range of 2.8 and 4.3 V in lithium-ion batteries. Moreover, the optimal sample has the first discharge capacity of about 115 mAh g(-1) at a current density of 0.11 mA cm(-2) in the all-solid-state lithium battery with Li10GeP2S12 as solid state electrolyte. Electrochemical impedance spectroscopy measurements show that the post-annealing process plays an important role in suppressing the increase of cell impedance during charging-discharging. The experimental results suggest that the post-annealed LiNi1/3Co1/3Mn1/3O2 material is very suitable as one of the leading cathode materials for lithium-ion and solid-state lithium batteries with long cycle life and high power density