Forest legislation of Peter the great: traditions and innovations

Summing up the overall result of Peter's activities in the field of forest legislation and forest protection, we quote the words of V.V. Chernykh: "Despite the complexity and inconsistency of regulatory legal acts, Peter's law-making played an important role in the development of forest protection legislation. Some of them were included in the Forest Charter of the Empire, adopted in 1802, and in other regulatory legal documents that operated on the territory of the Russian state

Concept of use of comprehensive fertilizers of long-term action on the basis of waste processing of potassium-magnesium ore as a new paradigm in improving soil fertility

Technology for the production and use of new multiple slow-release fertilizers from clay-salt waste (sludge) remaining as a result of potassium fertilizers production from natural K-Mg ores, is elaborated in Perm Federal Research Center. The main processes in the technology are waste enrichment and subsequent high-temperature calcination of the enriched concentrate. As a result, the product, received the name the calcine of clay-salt sludge, was formed having the properties of multiple slow-release fertilizer and ameliorant. Laboratory and field experiments on the calcine use as a potassium fertilizer were fulfilled. The studied crops were spring wheat, barley, and potato. The experimental scheme included such treatments: control (without fertilizers), NP – background; NP + KCl and NP + calcine. The use of calcine for grain crops (wheat, barley) on the NP background promoted the yield gains by 1.7–1.9 t/ha compared with the control, the use of standard NPK fertilizers – by 1.8–2.0 t/ha, the difference was within the error of the experiment (HCP05 = 0.21; 0.38 t/ha). The content of nitrogen, phosphorus and potassium in the grain and straw of both crops in the treatments using calcine was approximately equal to the variants using standard fertilizer and significantly higher compared to the control. Differences between calcine treatments were not significant. The application of N90P90 and full mineral fertilizer (N90P90K90) contributed to the yield increase of potato tubers by 1.43–4.51 t/ha respectively. The use of unconventional potassium fertilizer – calcine on the background of NP was not inferior in efficiency to the use of traditional fertilizer – potassium chloride. The quality parameters of the potato crop (dry matter and starch content in tubers, the content of heavy metals) were also not inferior compared to the use of traditional potassium fertilizer. The use of calcine for potato and cereals in rates equal to K60-120 did not lead to deterioration of the fertility indicators of sod-podzolic soil. Upon receipt of the cinder, one can use the additional unlimited set of components. In other words, this is a conceptual model for creating new types of mineral fertilizers with desired properties for different soil and climatic conditions and crops with different requirements for mineral nutrition

Modern microwave methods in solid state inorganic materials chemistry: from fundamentals to manufacturing

No abstract available

Possibilities of clinical use of designs based on zirconium dioxide, andevaluation of the main features of the new ceramic dental appointment

Every year, steadily increasing the quantity of patients, ortopedic treatment which is performed using structures made of zirconium dioxide. The interest of dentists to this method of replacing teeth and defects of dentition due to the fact that orthopedic constructions made of zirconium dioxide with the use of CAD I CAM technologies have high durability, aesthetics and precision. A method for the synthesis of nanocrystalline powder of Zr02, stabilizet with Y203, by co-deposition with the use of elements of the solgel technology for low temperature sintering. X-ray diffraction, thermal desorption of nitrogen, and electron microscopy study of powder characteristics, depending on synthesis conditions. Preclinical trials indicate the developed material meets the require ments of durability end aesthetics.С каждым годом, неуклонно увеличивается число пациентов, ортопедическое лечение которых проводится с использованием конструкций выполненных из диоксида циркония. Интерес стоматологов к данному методу замещения дефектов зубов и зубных рядов обусловлен тем, что ортопедические конструкции, изготовленные из диоксида циркония с применением CAD/CAM технологий обладают высокой прочностью, эстетичностью и прецензионностью. Разработана методика синтеза нанокристаллического порошка Zr02, стабилизированного Y203, методом совместного осаждения с применением элементов золь-гель технологии, для низкотемпературного спекания. Методами рентгеновской дифракции, тепловой десорбции азота и электронной микроскопии изучены характеристики порошка в зависимости от условий синтеза. Проведенные доклинические испытания свидетельствуют, что разработанный материал отвечает требованиям прочности и эстетичности

Difficulties of radiological diagnosis оf small breast cancers

Introduction. Breast cancer in the structure of malignancies in women takes the 1st place. There has been an annual increase in morbidity, including due to improvements in diagnostic interventions and screening. Mammography and ultrasound of the breasts is mandatory when diagnosing breast cancer. The difficulties of diagnosis are revealed in small tumorsВведение. Рак молочной железы (РМЖ) в структуре злокачественных новообразований (ЗНО) у женщин занимает первое место. Отмечается ежегодный прирост заболеваемости, в том числе из-за усовершенствования диагностических мероприятий и скрининга. Маммография и ультразвуковое исследование молочных желез является обязательным при постановке диагноза РМЖ. Сложности диагностики выявляются при опухолях малых размеров

Algorithm for cancelling inhaled corticosteroids in patients with chronic obstructive pulmonary disease. Regional Meeting of Experts

A treatment algorithm for chronic obstructive pulmonary disease (COPD) implies that all patients with COPD should receive long-acting anticholinergic bronchodilators, long-acting β2 -agonists, or a combination of these drugs as the basic therapy. Inhaled corticosteroids (IHCs) are indicated for a limited group of patients with COPD and have a number of contraindications. Clear indications for the IHCs use as dual therapy in combination with long-acting β2 -agonists, or as triple therapy in addition to long-acting anticholinergic bronchodilators combination, were determined. IHCs in combination with long-acting bronchodilators are prescribed for patients with COPD in cases of non- infectious exacerbations recurring during the year in frames of treatment with long-acting bronchodilators with anamnestic indications or the presence of bronchial asthma and/or the eosinophil number in the blood test without exacerbation >300 cells/μl. Algorithm for IHC cancellation has been developed for patients with COPD due to several causes: complications development as a result of IHC prolonged treatment; evidence of the benefits or equivalent effects of long-acting bronchodilators compared to inhaled corticosteroid-containing therapy.Алгоритм лечения хронической обструктивной болезни легких (ХОБЛ) подразумевает, что все пациенты с ХОБЛ должны получать длительнодействующие антихолинергические бронходилататоры (ДДАХ), длительнодействующие β2 -агонисты (ДДБА) либо сочетания этих препаратов в качестве базисной терапии. Ингаляционные глюкокортикостероиды (ИГКС) показаны ограниченной группе пациентов с ХОБЛ и имеют ряд противопоказаний. Определены четкие показания к применению ИГКС в качестве двойной терапии в сочетании с ДДБА либо тройной терапии дополнительно в сочетании с ДДАХ. ИГКС в сочетании с ДДБД назначаются больным с ХОБЛ в случаях повторяющихся в течение года неинфекционных обострениях на фоне лечения ДДБД при анамнестических указаниях или наличии бронхиальной астмы и/или количестве эозинофилов крови вне обострения >300 кл./мкл. Разработан алгоритм отмены ИГКС у пациентов с ХОБЛ в связи с развитием осложнений в результате длительной терапии ИГКС и наличием доказательств преимущества или равнозначного эффекта ДДБД в сравнении с ИГКС-терапией

Reactions of 2-mercaptoacetic acid with mucochloric acid and its derivatives

The stable products of reactions of mucochloric acid and some of its ethers with 2-mer-captoacetic acid were synthesized and characterized. The variation of experimental conditions allowed targeted introduction of a sulfur- containing fragment into particular position of the heterocycle: the reaction in aqueous potassium hydroxide gives 3-substituted 2(5H)-furanone the triethylamine additive in nonaqueous solvents facilitates the formation of 4-substituted products, and acid catalysis results in the replacement of the hydroxy (methoxy) group at C(5). (3,4-Dichloro-2-oxo-2,5-dihydrofuran-5-ylthio)ethanoic acid and (3-chloro-5-hydroxy-2oxo-2,5dihydrofuran-4-ylthio)ethanoic acid were characterized by X-ray diffraction; their crystal and gas-phase structures were discussed. The 5-monosubstituted product crystallizes as a racemate, while 4monosubstituted product, as a conglomerate. © 2009 Springer Science+Business Media, Inc

Reactions of 2-sulfanylethanol with mucochloric acid and its derivatives

Mucochloric acid reacted with 2-sulfanylethanol in the presence of triethylamine to give 3-chloro-5-hydroxy-4-(2-hydroxyethylsulfanyl)furan-2(5H)- one which underwent acid-catalyzed cyclization to 7-chloro-2,3,4a,6- tetrahydrofuro[2,3-b][1,4]oxathiin-6-one. Likewise, reactions of 5-alkoxy-3,4-dichlorofuran-2(5H)-ones with 2-sulfanylethanol in the presence of triethylamine involved replacement of chlorine in position 4 of the furan ring with formation of the corresponding 4-(2-hydroxyethylsulfanyl) derivatives. The reaction of mucochloric acid with 2-sulfanylethanol in excess aqueous potassium hydroxide resulted in the formation of an acyclic product, 3-(2- hydroxyethylsulfanyl)-2-chloroprop-2-enoic acid. The structure of 7-chloro-2,3,4a,6-tetrahydrofuro[2,3-b][1,4]oxathiin-6-one and 3-(2-hydroxyethylsulfanyl)-2-chloroprop-2-enoic acid was proved by X-ray analysis. © 2008 MAIK Nauka

Reactions of 2-sulfanylethanol with mucochloric acid and its derivatives

Mucochloric acid reacted with 2-sulfanylethanol in the presence of triethylamine to give 3-chloro-5-hydroxy-4-(2-hydroxyethylsulfanyl)furan-2(5H)- one which underwent acid-catalyzed cyclization to 7-chloro-2,3,4a,6- tetrahydrofuro[2,3-b][1,4]oxathiin-6-one. Likewise, reactions of 5-alkoxy-3,4-dichlorofuran-2(5H)-ones with 2-sulfanylethanol in the presence of triethylamine involved replacement of chlorine in position 4 of the furan ring with formation of the corresponding 4-(2-hydroxyethylsulfanyl) derivatives. The reaction of mucochloric acid with 2-sulfanylethanol in excess aqueous potassium hydroxide resulted in the formation of an acyclic product, 3-(2- hydroxyethylsulfanyl)-2-chloroprop-2-enoic acid. The structure of 7-chloro-2,3,4a,6-tetrahydrofuro[2,3-b][1,4]oxathiin-6-one and 3-(2-hydroxyethylsulfanyl)-2-chloroprop-2-enoic acid was proved by X-ray analysis. © 2008 MAIK Nauka