3D-Printed Lithium-Ion Battery Electrodes: A Brief Review of Three Key Fabrication Techniques.

In recent years, 3D printing has emerged as a promising technology in energy storage, particularly for the fabrication of Li-ion battery electrodes. This innovative manufacturing method offers significant material composition and electrode structure flexibility, enabling more complex and efficient designs. While traditional Li-ion battery fabrication methods are well-established, 3D printing opens up new possibilities for enhancing battery performance by allowing for tailored geometries, efficient material usage, and integrating multifunctional components.

Organic Anode Materials for Lithium-Ion Batteries: Recent Progress and Challenges.

In the search for novel anode materials for lithium-ion batteries (LIBs), organic electrode materials have recently attracted substantial attention and seem to be the next preferred candidates for use as high-performance anode materials in rechargeable LIBs due to their low cost, high theoretical capacity, structural diversity, environmental friendliness, and facile synthesis. Up to now, the electrochemical properties of numerous organic compounds with different functional groups (carbonyl, azo, sulfur, imine, etc.) have been thoroughly explored as anode materials for LIBs, dividing organic anode materials into four main classes: organic carbonyl compounds, covalent organic frameworks (COFs), metal-organic frameworks (MOFs), and organic compounds with nitrogen-containing groups.

Anomalous temperature dependence of gas chromatographic retention indices of polar compounds on non-polar stationary phases.

Increasing the reliability of both GC and GC-MS identification requires appropriate interlaboratory reproducibility of gas chromatographic retention indices (I). Known temperature dependence, I(T), is the main source of non-reproducibility of these parameters. It can be approximated with a simple linear function I(T).

Overloading control of gas chromatographic systems.

Increasing the interlaboratory reproducibility of gas chromatographic retention indices requires avoiding measurements distorted by overloading effects. Several criteria of evaluating the limits of the mass overloading of gas chromatographic systems are compared and reconsidered. The criteria mostly appropriate for practical purposes are based on (i) the dependences of factors of peak broadening (ratio of peak height and its width) vs.

[Long-term results of combined x-ray endovascular surgical treatment of patients with ductal adenocarcinoma of the pancreatic head].

On the basis of the results of treatment of 105 patients with locally advanced ductal adenocarcinoma of the pancreatic head the authors present the results of work over a period of time since 1999 to 2009. In the main group the combined treatment was used for 51 patients: the non-adjuvant selective chemoembolization of the pancreatic head adenocarcinoma was performed, than standard gastropancreatoduodenal resection with lymphodesection and 6 cycles of adjuvant chemoinfusion in celiac trunk were completed. In control group standard gastropancreatoduodenal resection was performed.

[The role of vascular reconstructions in the surgery of tumors of the hepatopancreatobiliary zone].

An analysis of results of 83 operations performed for tumors of the hepatopancreatobiliary zone included the period of 2006-2007. In 39 resections of the pancreas there were 16 (41.0%) cases when the operation was supplemented with a reconstruction of the major vessels.

[Neoadjuvant intra-arterial oil chemoembolization and adjuvant selective intra-arterial chemoinfusion in the combined treatment of pancreatic cancer].

Neoadjuvant intra-arterial oil chemoembolization and adjuvant selective intra-arterial chemoinfusion with gemicitabine was administered to 28 patients with operable exocrine pancreatic cancer. It was well tolerated and not followed by complications which allowed for gastropancreatoduodenal resection to be carried out in all cases. Complete course of combined treatment was given to 23 out of 28 patients (82.

[Role of 18F-FDG PET scan in the differential diagnosis of large pancreatic masses].

Results of standard 18FDG PET and double-phase scanning were compared in the course of differential diagnosis of pancreatic cancer and chronic pseudotumorous pancreatitis, particularly, during exacerbation. PET diagnosis of cancer was confirmed in 6.5% while that of double-phase scanning--100%.

[Radiopaque oil chemical arterial embolization in treatment of pancreatic cancer].

The article is dedicated to a new method of treatment of pancreatic cancer, developed by researchers of St. Petersburg Research Institute of Roentgenology and Radiotherapy. The method consists in slowing down blood flow in the tumor by means of selective embolization of its arteries using a mixture of the chemiotherapeutic agent gemcitabine (Gemzar) in the oily radio-paque medium Lipodol Ultrafluid.

[Arterial oil chemoembolization: a new method of treatment for pancreatic cancer].

A novel method of intra-arterial oily chemoembolization of pancreatic tumor has been developed. It slowed down regional blood flow in tumor dramatically due to injection of gemcitabin-in-oil. As a result, a prolonged contact of tumor with the highly-concentrated chemotherapeutic drug along the microcirculatory bed was assured.

[Role of current MRI technology in the diagnosis of pancreatic tumors].

The Magnetom Vision unit (Siemens) with 1.5 T magnetic field and a Body surface coil was used to examine 87 patients with pancreatic tumors, adenocarcinoma--56, cystadenoma--3, and chronic pancreatitis--28. Magnetic resonance cholangiopancreatography (87), dynamic contrast-enhanced MRI (56) and MR angiography of the abdominal cavity (21) were used in conjunction with the paramagnetic drugs Magnevist (Shearing) or Omniscan (Nikomed).

[Percutaneous needle biopsy in the diagnosis of pancreatic cancer].

The data on two procedures of ultrasound-guided fine-needle biopsy of pancreatic masses in 81 patients are presented (1999-2001): for cutting biopsy--64, and aspiration--and 17. Pancreatic cancer was identified in 41, non-epithelial tumor--3, metastasis to pancreas--2 and indurative pancreatitis--21. Complication were rare: hematoma formation after interstitial biopsy--1 (1.

[Assessment of 18FDG PET for diagnosis of pancreatic tumors].

The paper examines the informational value of positron emission tomography (PET) using 18FDG in the diagnosis of malignant of neoplasms of the pancreas and in the estimation of the extent of a metastatic involvement. Forty-four patients (26 males and 18 females whose age ranged from 28 to 60 years) with histologically verified cancer of the pancreas were examined. The study was conducted in the whole body mode on an Ecat Exact 47 positron emission tomograph following 70-90 minutes of administration of 18FDG, 370-420 MBk.

[Topical diagnostic methods in primary hyperparathyroidism].

The efficiency of USI of the neck, scintigraphy of the parathyroid glands (PTG) with selen-methionine and selective catheterization of veins (SCV) of the neck and mediastinum for preoperative determination of the localization of the source of hyperproduction of the parathyroid hormone was analyzed on the basis of results of examination of 149 patients including 51 patients with primary hyperparathyroidism confirmed during the operation. It was noted that none of the methods of topical diagnostics used in the work is thought to be universal for different clinical situations. A method of their complex use is proposed which foresee USI of the neck as the first step.

[Localization of energy domains in Bacillus intermedius 7P ribonuclease].

Two independently melting regions (energetic domains) were localized in Bacillus intermedius 7P ribonuclease by methods of circular dichroism and high resolution X-ray analysis: the lov-temperature melting domain, containing C-terminal region of the molecule with five strands in antiparallel beta-structure and the high-temperature melting alpha-helical domain in the N-terminal region. The contact between these domains is stabilized mainly by ionic interaction Asp-22 - Lys+-48. At pH 2.