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

A wide variety of media can be used in learning, including distance learning, such as print, lectures, conference sections, tutors, pictures, video, sound, and computers. Any one instance of distance learning will make choices among these media, perhaps using several.

Multimedia in Learning

Let's read! We will often find out this sentence everywhere. When still being a kid, mom used to order us to always read, so did the teacher. Some books are fully read in a week and we need the obligation to support reading. What about now? Do you still love reading? Is reading only for you who have obligation? Absolutely not! We here offer you a new book enPDFd preventing chronic diseases a vital investment to read.

Preventing Chronic Diseases: A Vital Investment

Seed treatments to overcome salt and drought stress during germination in sunflower (Helianthus annuus L.)

A 78-year-old woman with a history of hypertension is admitted to the hospital with congestive heart failure. Physical examination reveals a blood pressure of 180/90 mm Hg, increased jugular venous pressure, peripheral edema, and pulmonary rales. A chest radiograph shows pulmonary edema and mild cardiomegaly. An echocardiogram shows a left ventricular ejection fraction of 70 percent. The left ventricular Doppler filling pattern is abnormal and consistent with an elevated pulmonary-capillary wedge pressure. How should this patient be treated?

Diastolic Heart Failure

Changes in tomato (Lycopersicon esculentum Mill.) seed quality were monitored during seed development and maturation in glasshouse experiments in 2 years. The end of the seedfilling period (mass maturity) occurred 35–41 d after anthesis (differing among trusses) in 1989 and 42 d after anthesis in 1990. Seed moisture contents at this developmental stage were 53–72% (wet basis), while the onset of ability to germinate (during 21-d tests at 20°/30°C) and the onset of tolerance to rapid enforced desiccation occurred just before (1990) or just after (1989) mass maturity. In 1989, seed quality was assessed primarily by seedling size in a glasshouse experiment; maximum mean seedling dry weight 25 d after sowing was not achieved until 24–40 d after mass maturity. In 1990, seed quality was assessed primarily by germination following storage; maximum normal germination after 35 d in storage at 40 °C with 14 ± 0.5% moisture content was attained 23 d after mass maturity, but with little difference among seed lots harvested 10 d earlier or up to 30 d later. The results contradict the hypothesis that maximum seed quality is attained at the end of the seed-filling period and that seed viability and vigour begin to decline immediately thereafter.

https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0960258500001173

Changes in seed quality during seed development and maturation in tomato

Watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) seeds were subjected to osmoconditioning (2% KNO 3 , 20°C, 6 d) or hydropriming (30°C, 18 h) and incubated at 15, 25 and 38°C. Mean time to germination was decreased and germination increased by both priming treatments at 15°C with osmoconditioning being superior to hydropriming. However, neither osmoconditioning nor hydropriming treatment affected germination significantly at 25 and 38°C. The effect of priming on root growth and on emergence from deep plantings was also assessed after synchronisation of radicle emergence between treatments to exclude the confounding effect of germination rate differences. Root growth was not significantly improved by priming but emergence at 15°C was enhanced. It can be concluded from this result that improved emergence after priming is not due to the beneficial effect on radicle emergence only, but also to improved hypocotyl growth. Osmoconditioning increased germination under osmotic stress.

The effect of priming treatments on the performance of watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) seeds under temperature and osmotic stress

http://jararaca.ufsm.br/websites/ces/download/Pos-S2/Rafael.pdf

Ibrahim Demir

Papers

Changes in seed quality during seed development and maturation in tomato

The effect of priming treatments on the performance of watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) seeds under temperature and osmotic stress

Research on solid waste management system: To improve existing situation in Çorlu Town of Turkey

A revisit of pressure drop-flow rate correlations for packed beds of spheres

Mean germination time of pepper seed lots (Capsicum annuum L.) predicts size and uniformity of seedlings in germination tests and transplant modules