The effect factors of PHB accumulation, the high cell density culture techniques and kinetic models of PHB fermentation were reviewed in detail.
本文对近年来PHB发酵研究的进展进行了介绍，重点介绍了影响PHB积累的因素、PHB高密度发酵技术和PHB发酵动力学模型。
Dialysis techniques are discussed as a means for effective removal of low-molecular-mass components from fermentation broth to reach high cell density.
本文讨论了有效利用透析技术从发酵液中及时转移低分子杂质混合物，从而获得高密度发酵细胞的方法。
Staining of a thin sliver of each block can highlight the main bodies of nerve cells (top, purplish image) with the darker areas indicating high cell density near the brain's surface.
对每一块的细微纹路进行着色能突显出神经细胞的主体部分(上面略带紫色的图)。图中的偏暗区域代表了大脑表明的高细胞密度区域。
The results show that the cell potential along fuel flow change little at high current density when low fuel or products concentration area does not appear.
结果表明：在高电流密度情况下，当燃料沿燃料通道方向流动未出现低燃料浓度区或产物浓度区时，电池电势在燃料流动方向上变化不大；
Proton membrane fuel cell (PEMFC) with its advantages such as high power density, rapid start and pollution-free becomes the first-selected clean energy system in 21st century.
质子膜燃料电池(PEMFC)以其高功率密度，启动迅速，无污染等优点成为21世纪首选清洁能源系统。
Conclusion: Under adequate culture conditions, high density and high expression culture of the recombinant cell line could be realized by using bioreactor.
结论：在较为适当的培养条件下，利用生物反应器可使工程细胞的培养达到高密度、高表达。
A flooding phenomenon in a high current density loading region of fuel cells is suppressed so as to improve cell performance.
抑制了在燃料电池的高电流密度负载区域中的溢流现象，从而改善了电池性能。
With the characteristic of high energy density, the reaction between metal matrix fuel and water can be used for underwater high-velocity propulsion and new generation fuel cell.
金属基燃料与水反应具有能量密度高的特点，可用于水下高速推进，也可用于新一代燃料电池。
Cell density cultivation and high level expression of recombinant urease a fusion protein in Helicobacter pylori.
目的高密度培养重组细菌和高效表达重组幽门螺杆菌尿素酶a融合蛋白。
Direct methanol fuel cell (DMFC) is an ideal portable power source in the future because of the simple system, high energy density and convenient fuel storage and transportation.
直接甲醇燃料电池(DMFC)具有系统简单、比能量高、燃料便于储运等优点，是未来理想的移动电源系统。
Having high breast-tissue density can drastically raise your risk of developing breast cancer, as does finding atypical hyperplasia, or abnormal cell growth, which is confirmed by a biopsy.
乳腺癌密度增高能剧烈地增加发生乳腺癌的风险，如同发现经活检确认的不典型增生或异常细胞生长一样。
The optional high cell-density fermentation conditions, purification methods and biological activity of the recombinant enterokinase in E.
对重组肠激酶在大肠杆菌中的高密度发酵表达条件、纯化方法及其生物活性测定进行了研究。
Magnesium fuel cell has a favorable application potential in military and civilian fields because of its high energy density, safety and low cost.
镁燃料电池具有高比能量、安全和成本低等特点，在军事和民用方面有良好的应用前景。
High density closed-cell foam backing: sound reduction and comfort underfoot.
高密度闭孔泡沫背衬：吸收噪音并提供舒适的脚感。
Diode is considered to be the best driver of high-density phase change Random Access Memory (PCRAM) for its advantage of the cell area.
由于二极管在单元尺寸上的优势，被认为是高密度相变存储器中驱动管的不二之选。
HW-1 cells from high seawater-containing medium grew independently of cell-density, while those from low-seawater media (10% or less) showed density-dependent growth.
高海水浓度培养条件下的HW—1的细胞生长没有密度依赖性，而低海水浓度(10%或更低)培养条件下的细胞生长具有一定的密度依赖性。
The necessary condition under which shear band might appear in fly ash specimen was the relatively large density, small cell pressure and relatively high degree of saturation specimen.
粉煤灰三轴试样出现剪切带的必要条件是土样具有较大的相对密度和相对较小的周围压力，相对较高的试样和饱和状态的试样比较容易出现剪切带。
The necessary condition under which shear band might appear in fly ash specimen was the relatively large density, small cell pressure and relatively high degree of saturation specimen.
粉煤灰三轴试样出现剪切带的必要条件是土样具有较大的相对密度和相对较小的周围压力，相对较高的试样和饱和状态的试样比较容易出现剪切带。
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