There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

Nature And Properties Of Soils

What makes a leader

A 21st century technique for food control: Electronic noses

Enhancement of natural growing medium amendments with microwave irradiation has been demonstrated but has received less research attention A greenhouse experiment was carried out to determine the effect of microwaved vermicast on dahlia Dahlia pinnata lsquo Cobequid Celestial Star rsquo plant growth and flower production Fresh moist vermicast was treated with microwave irradiation power levels W W W and W with non microwaved vermicast as the control W The temperature of the microwaved vermicast increased from oC at W to oC at W but dropped to oC at W The density of bacteria colonies was high in treatments W W and W and the least in treatment W while treatment W did not support bacteria growth Total nitrogen content did not change much but leaf tissue phosphate content increased from W to W Leaf tissue chlorophyll content was increased by treatment W followed by the FV while anthocyanin content consistently increased with an increase in power output level Microwave irradiation increased total plant and tuberous roots fresh weights Those treatments ge W had the greatest positive impact on total number of floral organs and longevity of flowers as compared to the W and the W treatments Overall it was demonstrated that microwave irradiation at W improve vermicast chemical properties and enhance dahlia plant growth and flower production Further study on microbial structure will be necessary

https://medcrave.org.medcraveonline.com/index.php/HIJ/article/download/5952/11141

Potential effect of microwaved vermicast on dahlia plant growth and flower production

Nitrogen (N) fertilization at critical planting time is important to optimize productivity and reduce nitrate accumulation in edible portions of green leafy vegetable plants. A field experiment was performed to determine the effects of variations in N rate and planting time on plant growth, yield, and nutritional quality attributes of Basella alba under Atlantic maritime climatic conditions. The N rates were 0 (control), 40 (low), 80 (medium), and 120 kg ha−1 (high) at planting times 15 June–3 August (early season), 6 July–20 August (mid-season), and 4 August–8 September (late season). Plant height, number of branches, and stem girth were increased after 45 days after sowing in early and mid-season plantings, but leaf length decreased during the same time by 32.8% in the late planting. The average yield obtained in early, mid-, and late plantings were 171, 464, and 328 g plant−1, respectively. Low N gave the highest yield in early planting while medium N gave higher yields in mid- and late plantings. However, the medium N increased nitrate accumulation in B. alba by 7% compared to the high N rate. In general, there was no significant effect of N on B. alba total phenolic and total carotenoid contents. Overall, the highest yield was obtained during the warmest summer months of mid- and late plantings. Therefore, there is a potential to grow B. alba as a summer vegetable under Canadian Atlantic maritime conditions. However, it is recommended to reduce the rate of N fertilizer application during high-temperature conditions. Future studies are required to investigate phosphorus and potassium fertilization and nitrate accumulation in B. alba and potential health risks.

/pdf/plant-growth-and-nutritional-quality-attributes-of-basella-25l3qdvpaq.pdf

Plant Growth and Nutritional Quality Attributes of Basella alba Applied with Variable Rates of Nitrogen Fertilizer at Different Planting Dates under Canadian Maritime Climatic Conditions

Chemical stability is one of the key quality control criterion for complex degradable materials with an active microbial community like compost tea, but largely understudied A laboratory study was performed to assess the chemical stability of varying concentrations (0, 25, 5, 10, 15, 20, 30, 50 and 100%) of municipal solid waste (MSW) compost tea stored at different temperatures (4°, 10°, 22° and 35°C) and storage time (0, 13, 26 39 and 52 days) A 2-dimension principal component biplot confirmed close relationship amongst total dissolved solids (TDS), electric conductivity (EC) and salinity while pH was less related and turbidity was isolated TDS in the MSW compost tea did not change at a storage temperature of 4oC or 10oC but was significantly (P<005) increased by 43% when the storage temperature was raised to 35oC Also, TDS increased sharply from 9325 mg/L on day 1 to 11131 mg/L on day 26 after which it remained unchanged EC increased by approximately 8% only when the MSW compost tea was stored at 35oC The EC on the other hand increased by 194% from 13128 µS/cm on day 1 when it peaked on day 26 and plateaued off to day 52 The change in pH was small and ranged from 744 to 767 Concentration had the strongest association with TDS, EC, salinity and turbidity and did not vary with storage time nor temperature A multilinear regression (Y = αD + βC + γT + k) showed significant (P<005) coefficients for all the independent variables except the coefficients for temperature in the turbidity, salinity and pH regression models In conclusion, the chemical stability of the MSW compost tea was dependent on the storage temperature and storage duration Chemical stability was reached after 26 days of storage while cold storage at 4oC or 10oC reduced chemical alteration

/pdf/concentration-temperature-and-storage-duration-influence-3c856fxsql.pdf

Concentration, Temperature and Storage duration Influence Chemical Stability of Compost Tea

Evaluation of diced onion (Allium cepa L.) quality using a potentially more efficient 32 conducting polymer sensor electronic nose (E-nose) was investigated. Diced (ca. 6 mm3) brown onion was sealed in 50 μm thick polyethylene bags and stored for 3, 6 and 9 days at 4 oC. E-nose sensor response (%dR/R) to samples headspace gas did not change
significantly (P > 0.05) over the initial 6 days of storage but significantly (P Evaluation de la qualite d'oignon (Allium cepa L.) coupe en cube utilisant le nez
electronique (nez - E) detecteur polymere a conducteur 32 qui est potentiellement plus efficace etait enquetee. L'oignon brun coupe en cube (ca. 6 mm3) etait emballe dans les sachets en polyethylene de 50 μm epais et mis en stock pour 3, 6, et 9 jours a 4 0C. La reaction (%d R/R) du detecteur nez - E aux gaz a la tete de l'espace d'echantillons n'a pas change considerablement (P > 0.05) pendant les 6 jours initiaux de stockage mais reduisait considerablement (P Ghana Journal of Science Vol. 47 2007: pp. 83-90

/pdf/quality-assessment-of-diced-onion-allium-cepa-l-using-an-2hwt179dir.pdf

Quality assessment of diced onion (Allium cepa l.) using an electronic nose

Diabetes is a metabolic disorder with no definite treatment, but it can be controlled by changing lifestyle and diet. Consumption of high-fiber and nutrient-rich foods including vegetables have been shown to reduce risks of obesity and Type II Diabetes Mellitus (T2DM). Also, many herbal plants have been associated with reduced risks of T2DM because of their composition of secondary metabolites. Antioxidant activities of some secondary metabolites have potent inhibitory effects against inflammation linked with insulin resistance and oxidative stress. More than 800 known medicinal plants are used to control diabetes and its relevant complications. However, variations in preharvest factors including plant genotype, growing medium properties, climatic factors, and management practices can influence plant growth and their accumulation of phytochemicals with health-promoting properties. However, the effects of these preharvest factors on the antidiabetic properties of plant secondary metabolites are neither explicit nor easily accessible in the literature. Therefore, this review aims to document recent studies that reported on under-exploited medicinal plants with antidiabetic properties. We reviewed several important preharvest factors that can potentially affect the synthesis of phytoconstituents which possess antidiabetic properties. This review will help identify gaps for future research in phytomedicine and functional foods.

Lord Abbey

Papers

Potential effect of microwaved vermicast on dahlia plant growth and flower production

Plant Growth and Nutritional Quality Attributes of Basella alba Applied with Variable Rates of Nitrogen Fertilizer at Different Planting Dates under Canadian Maritime Climatic Conditions

Concentration, Temperature and Storage duration Influence Chemical Stability of Compost Tea

Quality assessment of diced onion (Allium cepa l.) using an electronic nose

Effects of preharvest factors on antidiabetic potential of some foods and herbal plants.