Ökológiai gazdálkodás melléklet - 2012. április - május

Az Őstermelő című lap ökológiai gazdálkodás mellékletét az ÖMKi és Hungária Öko Garancia munkatársai szerkesztették. E szám mellékletében az alábbi témákról olvashatnak: - Baktériumkészítmények hatása az ökológiai kukoricatermesztésben - Paradicsom tájfajták összehasonlító vizsgálata - Szőlősorköz-takarónövényzet vizsgálatok együttműködésben a gazdálkodókkal - 6. Európai Ökológiai Gazdálkodási Kongresszus: "Intelligens váltás egy fenntartható KAP felé" - Organic Marketing Forum - Hogyan álljunk át okosan ökológiai gazdálkodásra? Hasznos tippek az ellenőrző szervezettő

Fajgazdag szőlősorköz-takarónövényzet magkeverékek fejlesztése és alkalmazási lehetőségei magyarországi szőlőültetvényekben.

A nem körültekintően végzett mezőgazdasági tevékenység következtében a talajok állapotának romlása világszerte, így Európában és Magyarországon is jelentős méreteket ölt. Európai viszonylatban a talajok mintegy harmadát károsítja a tömörödés, míg a víz által előidézett talajerózió a becslések szerint 1,3 millió nkm kiterjedésű területet érint

Chemotaxonomical researches in higher plants XII. Researches concerning the pigments and glucides of Phytolacca Americana L.

The paper presents the results of biochemical analyses of Phytolacca Americana plants grown in the Agrobotanical Garden Cluj-Napoca. Carotenoid pigments (neoxanthin, violaxanthin, zeaxanthin, lutein, cryptoxanthin, alpha-carotene and beta-carotene) chlorophyll pigments (a,b) and glycoside pigments (betalaines, quercetin) have been analysed in fruits and leaves respectively.</p

Circular Dichroism of Diglycosyl Dichalcogenides in Solution and Solid State

1,3-Dioxolane- and dioxane-type (1- and 2-naphthyl)ethylidene ketals of p-methoxyphenyl alpha-L-rhamnopyranoside and beta-D-glucopyranoside were prepared and their stereochemistry studied by solution and solid-state circular dichroism, X-ray diffraction, and coupled-oscillator CD calculations on the solid-state and MMFF-calculated geometries. Intermolecular exciton-coupled interactions between the nearby aromatic chromophores in the solid state and different conformers in solution and solid state could be identified as the main reason for the difference between solution and solid-state CDs

In breast cancer patients sentinel lymph node metastasis characteristics predict further axillary involvement.

The aim of the study was to correlate various primary tumor characteristics with lymph node status, to examine sentinel lymph node (SLN) metastasis size and non-SLN axillary involvement, to look for a cut-off size/number value possibly predicting additional axillary involvement with more accuracy and to examine the relationship of SLN metastasis size to overall survival. Of 301 patients who underwent SLN biopsy, 75 had positive SLNs. The size of the metastases was measured. For different size categories, association with the prevalence of non-SLN metastases was assessed. Associations between metastasis size and tumor characteristics and overall survival (OS) were studied. The prevalence of axillary lymph node (ALN) involvement was not significantly different between cases with micrometastasis or macrometastasis in SLNs (p = 0.124). However, for metastases larger than 6, 7, and 8 mm, the prevalence of ALN involvement was significantly higher (p = 0.046, 0.022, and 0.025). OS was significantly lower in SLN-positive than in SLN-negative cases (p = 0.0375). Primary tumor size larger than 20 mm was associated with a significantly higher incidence of SLN metastasis (p /=7) in primary tumors was significantly (p < 0.001) associated with ALN involvement in SLN-positive cases, whereas higher Ki67 labeling index was not significantly correlated with SLN or ALN involvement. Lymphovascular invasion (LVI) in primary tumors was significantly correlated with SLN positivity (p < 0.001) but not with further ALN involvement or OS. Tumor size and LVI are predictive for SLN metastasis. Mitotic index, primary tumor size, and larger volume SLN involvement are determinants of further ALN involvement. SLN metastasis size over 6 mm is a strong predictor of further axillary involvement. OS is shorter in the presence of positive SLN

Synthesis and chiroptical properties of (naphthyl)ethylidene ketals of carbohydrates in solution and solid state

1,3-Dioxolane- and dioxane-type (1- and 2-naphthyl)ethylidene ketals of p-methoxyphenyl α-l-rhamnopyranoside and β-d-glucopyranoside were prepared and their stereochemistry studied by solution and solid-state circular dichroism, X-ray diffraction, and coupled-oscillator CD calculations on the solid-state and MMFF-calculated geometries. Intermolecular exciton-coupled interactions between the nearby aromatic chromophores in the solid state and different conformers in solution and solid state could be identified as the main reason for the difference between solution and solid-state CDs