The synthesis and crystal structures of the first true homoleptic bis(trifluoromethanesulfonyl)amide complex compounds of trivalent f-elements are reported with [bmpyr]2[Ln(Tf2N)5], Ln = Nd, Tb and [bmpyr][Ln(Tf2N)4], Ln = Tm, Lu.

The reaction of Ln(NO3)2·6H2O salts (Ln = Eu and Tb) with an excess 2-fluorobenzoic acid (H-2FBz) in ethanol/water mixture allows the isolation dinuclear compounds formula [Ln2(-2FBz)4(2FBz)2(H-2FBz)2(H2O)2] (Ln...

Two systems, Ln/Sn/Se/en and Ln/Sn/Se/dien, were investigated under solvothermal conditions, and novel lanthanide selenidostannates [{Ce(en)(4)}(2)(μ-Se(2))]Sn(2)Se(6) (1a), [{Ln(en)(3)}(2)(μ-OH)(2)]Sn(2)Se(6) (Ln = Pr(1b), Nd(1c), Gd(1d); en = ethylenediamine), [{Ln(dien)(2)}(4)(μ(4)-Sn(2)Se(9))(μ-Sn(2)Se(6))](∞) (Ln = Ce(2a), Nd(2b)), and [Hdien][Gd(dien)(2)(μ-SnSe(4))] (2c) (dien = diethylen...

wych elm (ulmus glabra hudson) is one of the forest species in hyrcanian forests of iran and considered as threatened species due to its narrow ecological range, over-exploitation, as well as dutch elm disease. in order to evaluate the possibility of cryopreservation of ulmus glabra seeds for long-term preservation, seeds were collected from natural habitats and three pre-treatment methods incl...

background: this study evaluated the relation between telomere length in lymph node (ln) and prognosis of esophageal squamous cell carcinoma (escc).  materials and methods: lns collected from 50 patients were assessed by pathological examination and quantitative reverse transcription polymerase chain reaction (qrt-pcr), which was used for detecting telomere length. the relation between clinical...

ObjectiveSome surgeons believe that dissection posterior to the right recurrent laryngeal nerve lymph node (PRRLN-LN) is unnecessary for low metastasis rate and high complication risk. However, persistent metastatic nodes may have a higher recurrence rate, surgical risk, complications. Thus, it important distinguish patients who require PRRLN-LN dissection. To identify risk factors (LN-prRLN) e...

Background To evaluate the clinical outcomes of celiac lymph node (LN) metastasis in patients with locally advanced esophageal squamous cell carcinoma (ESCC) receiving curative concurrent chemoradiotherapy (CCRT). Materials and Methods A total of 375 stage III ESCC patients were identified, including 51 patients with celiac LN metastasis and 324 patients without celiac LN metastasis. Among th...

Assessing the characteristics of patients with Lupus Nephritis (LN) in comparison to those without LN among patients with systemic lupus erythematosus (SLE) could help portray LN disease burden. A multi-center chart review of adult SLE patients was conducted among rheumatologists/internal medicine physicians in UK/France/Germany/Italy/Spain (EU5) to collect data on disease characteristics and t...

We prove upper and lower bounds and give an approximation algorithm for the cover time of the random walk on a graph. We introduce a parameter M motivated by the well known Matthews bounds on the cover time and prove that M/2 ≤ C = O(M (ln ln n) 2). We give a deterministic polynomial time algorithm to approximate M within a factor of 2; this then approximates C within a factor of O((ln ln n) 2)...