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torr n.【電學】托〔真空單位〕。

torrefaction

The optimized experimental conditions are determined and the densities of some elements in the mental alloy standard samples are measured . the experimental results shows that the spectral intensity of the plasma enhances significantly with the increase of the operating voltage and the power density . ( 1 ) to the steel ally sample , the emission intensities of the spectra reach to the maximum values when the laser operating voltage is 1600v and the argon pressure is 600 torr . under the same pressure , the spectral intensity of the plasma in the argon atmosphere is stronger than that in the air . when the argon pressure is 320 to rr , the signal - noise ration is about 5 times than that which the argon pressure is 700 torr , but the temperature of plasma is less about 1000k ( 1 )對于光譜標鋼準樣品,當激光器工作電壓為1600v 、氬氣壓力為600乇時,譜線強度達到最大,并且在相同壓強下,氬氣中的等離子體與空氣中的等離子體相比,其輻射強度明顯增強;氬氣壓力為320乇時的譜線信背比約為600乇條件下的5倍,而等離子體溫度卻下降了近1000k ,即等離子體溫度隨環境氣壓的增大而增大;當激光束的焦斑在樣品表面上下移動時,激光誘導量、等離子體的激發溫度、譜線強度都呈不對稱性分布,其最大值對應的焦斑位置都位于樣品表面之下0 . 4mm左右。

It showed under 600mmol / l nacl the potential activity and efficiency of primary conversion of light energy of psii in shoots of salicornia bigelovii torr . decreased . 5 . the effects of salt - treament on the osmotic adjustment ability of salicornia bigelovii torr . and zea mays the osmotic adjustment ability of the salicornia bigelovii torr 在100 - 300mmol lnacl處理時,畢氏海蓬子的fv fm 、 fv fo升高, 600mmol lnacl處理時畢氏海蓬子的fv fm 、 fv fo降低,表明只有高鹽度時才對畢氏海蓬子光能轉化機構的完整性及psii的潛在活性造成傷害。

The results we had determined lined as follows : 1 . the effects of salt - treatment on the growth situations of salicornia bigelovii torr . and zea mays both fresh weight and dry weight of whole plant of salicornia bigelovii torr . under 100 - 600mmol / l nacl were higher than the control , 300mmol / l nacl is the optimal nacl concentrations for salicornia bigelovii torr 鹽處理對兩種植物生長狀況的影響nacl處理條件下,畢氏海蓬子的鮮重和干重均高于對照, 300mmol lnacl是其最適生長鹽度,高于或低于此鹽度時,生長都呈下降趨勢。

If the focal point of the len shifts around the surface of the sample , the mass ablation , the temperature of the plasma and the spectral intensity appear asymmetric and their maximum occur at the location which is about 0 . 4mm under the surface of the sample . ( 2 ) to the plasma of the aluminum alloy sample , when the operating voltage is 1600v , the height from the observed location of the plasma to the surface of the sample is 2mm and the argon pressure is 660 torr , the spectral intensity have the maximum values ( 2 )對于標準鋁樣品,在激光器工作電壓為1600v 、等離子體觀測高度為2mm 、氬氣壓力為660乇時,其譜線強度最強;以al 308 . 22nm 、 al 309 . 27nm兩條譜線為分析線,發現隨著環境氣壓的增大,譜線自吸效應明顯增強,當環境氣壓達到600 - 700乇時,譜線幾乎產生自蝕。

( 5 ) the intensity and s / b of libs are investigated in detail at the different buffer gas , gas pressure , and laser power . the results show that under the 120 mj laser energy , for ar the best s / b is at 200 torr pressure , but for air at 100 torr and he at 300 torr . duration of atomic spectra in ar is longer than that in air ( 5 )實驗測定了不同的緩沖氣體和氣壓以及不同的入射激光脈沖能量對原子譜線強度和背景光的影響,結果顯示在氬氣環境下,當氣壓約為200torr 、激光的能量約為120mj時, libs的s b最大;在空氣和氦氣中獲得最佳s b時的氣壓約分別為100torr和300torr ;原子譜線在氮氣環境中持續的時間要比在空氣中持續的時間長。

Were 4 . 03 times higher than that of cytoplasm under 600mmol / lnacl and the na + in vacuoles of zea mays were 2 . 98 times higher than that of cytoplasm under 100mmol / lnacl . 4 . the effect of salt - treatment on the pn , fv / fm and fv / fo . the photosynthesis rate of salicornia bigelovii torr 鹽處理對兩種植物光合速率及fv fm 、 fv fo的影響一定鹽度促進了海蓬子的光合速率,在300mmol lnacl處理時,光合速率值最大,為對照的144 . 7 ,在600mmol lnacl處理時,光合速率值下降,為對照的92 . 2 。

The organs of the two species responed in different way to salinity . the ratios of roots and shoots of fresh weight of salicornia bigelovii torr . decreased with the increase of nacl concentration in medium , while the ratios of roots and shoots of fresh weight and dry weight of zea mays increased with the increase of nacl concentration in the external medium 兩種植物的不同器官對鹽漬環境的反應也不同,隨鹽處理濃度的升高及時間的延長,畢氏海蓬子鮮重及干重基礎上的根冠比下降,而玉米鮮重及干重基礎上的根冠比呈上升趨勢。

The promotion effects is stronger with the increase of number of photoperiods , which suggests that the flowering process in salicornia bigelovii torr . is not a “ all or none “ process . treated with 13 - 18 photoperiods and then transposed to long - daylength ( 17h light / d ) , some of the inflorescences of the plants reversed to vegetative condition , which means flowering reversion occurred ( which belongs to inflorescence reversion type ) 畢氏海蓬子開花的臨界日長為15小時,濟南地區最大晝長在6月23日,為14小時40分,并沒有超過其臨界日長,但處于自然日照條件下的畢氏海蓬子直至7月25日才形成花序,在此之前一直處于營養生長狀態,可能這個階段是成花物質積累的階段,當成花物質數量積累足夠多時,才可促進花序形成和導致開花。

Both the floral inducti on and the development of flower organ in salicornia bigelovii torr . needed short daylength . the flowering reversion is maybe in relation to the insufficient quality of flowering substances and the flowering habit of salicornia bigelovii torr . 畢氏海蓬子的成花逆轉現象可能與植株體內開花刺激物數華氏蛤么谷升龍的允用們技寇的研充量和植物的開花習性有關。

The osmotic adjustment ability of salicornia bigelovii torr . was 1 . 12mpa under 100mmol / lnacl , while osmotic adjustment ability of zea mays was only 0 . 61mpa . 6 . the effects of salt - treament on the ultrastructure of chloroplast of salicornia bigelovii torr 100mmol / lnaci處理時,海蓬子地上部細胞汁液的滲透調節能力為1 . 12mpa ,而相同鹽度處理時玉米的滲透調節能力僅為o . 6lmpa 。

Treated with 8h light / d , the critical number of photoperiods needed to induce flowering in salicornia bigelovii torr . is 13 . flowering reversion occurred when treated with 13 - 18 photoperiods and then transposed to long day - length ( 17h light / d ) 短日照處理促進畢氏海蓬子開花,這一點與justin等的結果一致,其開花的臨界日長為15小時; 2

All above indicates that short daylength promoted flowering in salicornia bigelovii torr . . on the contrary , long daylength inhibited both its floral induction and development of post - flowering 畢氏海蓬子的花器官發育具有與誘導同樣的光周期要求,均為短日照,屬于kniet分類中的第一種類型。

The basic microscope consists of an electron source and an assembly of magnetic lenses arranged in a vertical column that is evacuated to about 10 torr or better 基本的顯微鏡包括一個電子源和一塊以垂直的柱形排列的磁性透鏡集成板,板上排列的間隔為10托或更好。

The ultrastructure of chloroplast of zea mays changed under 100mmol / lnacl . in short , salicornia bigelovii torr . had strong ability to adapt to salinity an 總之,畢氏海蓬子具有較強的適應鹽漬環境的能力, 3o0mmol / lnaci是其最適生長盆度。

And zea mays transported na + mainly into vacuoles , and the ability of salicornia bigelovii torr . compartmentalized na + into vacuoles was higher than zea mays 同時結果還表明海蓬子將共質體中的na ~ +轉運入細胞質的能力強于玉米。

Salicornia bigelovii torr . . is a kind of euhalophyte . salicornia bigelovii torr . and zea mays were treated with nacl in the present study 畢氏海蓬子是一種耐鹽性較強的鹽生植物,且具有較高的經濟價值。

And zea mays under nacl stress are non - stomatal factors . the fv / fm and fv / fo of salicornia bigelovii torr 兩種植物光合速率的變化都是非氣孔因素引起的。

Effects of exogenous ga3 on germination and seedling growth of salicornia bigelovii torr . under nacl stress 3對鹽脅迫下北美海蓬子種子萌發及幼苗生長的影響

The data suggested that the reasons for photosynthesis change of salicornia bigelovii torr 玉米的光合速率隨鹽處理濃度的升高而下降。