We present a hitherto unknown fundamental limitation to a basic measurement: that of the position of a quantum object when the total momentum of the object and apparatus is conserved. This result extends the famous Wigner-Araki-Yanase theorem, and shows that accurate position measurements are only practically feasible if there is a large momentum uncertainty in the apparatus.

The aim of this study was the isolation and structural elucidation of steroidal glycosides from the underground parts of ramson Allium ursinum L. The structures of the isolated compounds were established based upon chromatographic methods and 1D- and 2D-NMR, MS and IR analyses. The mixture of two steroidal saponins: (25R)-spirost-5-en-3b-ol tetrasaccharide and (25R)-spirost-5, 25(27)-dien-3b-ol...

كچ ي هد هقباس فده و : ييوراد ناهايگ زا هدافتسا اب يتبايد ناراميب رد مرس بولطمان ياهديپيل و زكولگ حطس نداد شهاك يم رادروخرب يدايز ينيلاب تيمها زا دشاب . هوك هرت تهابش رب ينبم يتاقيقحت دهاوش دوجو هب هجوت اب ي س و ي ر رظن زا خرب ي د دض و هرثؤم داوم ي تبا ي س ندوب ي ،ر رب رد اذل يسر هوك هرت نمزم و يكاروخ فرصم رثا رضاح ي ،زكوـلگ نازيم رب رت ي د ييارحص شوم مرس لاتوت لورتسلك و ديريسيلگ سررب دروم يتبا...

Thiosulfinates (TSs) have been implicated as a principle source of the antiplatelet property of raw onion and garlic juice. The in vitro responses of human platelets to dosages of four TSs were measured using whole blood aggregometry and compared by regression analysis. Of the compounds evaluated, methyl methane-TS (MMTS), propyl propane-TS (PPTS), and 2-propenyl 2-propene-TS (allicin) are pres...

Allium hirtifolim (Persian Shallot) belongs to Allium genus (Alliaceae family). We investigated the in vitro effects of chloroformic extract of A. hirtifolium and its Allicin on the proliferation of HeLa (cervical cancer), MCF7 (human, caucasion, breast, adenocarcinoma) and L929 (mouse, C3H/An, connective) cell lines. Our results showed that components of A. hirtifolium might inhibit proliferat...

The effect of boron on the mitotic index of Allium cepa root meristematic cells were investigated. By using the growth inhibition test LD50 value was determined first and then different doses of varied concentrations of boron were introduced to onion tuber roots. Distilled water was used as control. Since Allium cepa cell cycle is 24 hours, application process was carried out at 12, 24 and 48 h...

Illicium verum (badiane or star anise), Crataegus oxyacantha ssp monogyna (hawthorn) and Allium cepa (onion), have traditionnally been used as medicinal plants in Algeria. This study showed that the outer layer of onion is rich in flavonols with contents of 103 ± 7.90 µg/g DW (red variety) and 17.3 ± 0.69 µg/gDW (white variety). We also determined flavonols contents of 14.3 ± 0.21 µg/g 1.65 ± 0...

Growing vegetables economically in the use of constructed wetland for wastewater treatment can play a role in overcoming water and food scarcity. Allium porrum L., Solanum melongena L., Ipomoea aquatica Forsk., and Capsicum annuum L. plants were selected to grow in hybrid constructed wetland (CW) under natural conditions. The impact of the ratio of nitrate to ammonium nitrogen on ammonium and n...