持续

China ; Sustainable forestry development ; Sustainable forest management ; Regionalisation

中国；林业可持续发展；森林可持续经营；区域化

The results showed that (1) COX-2 mRNA and protein existed in the mature male rat testis. COX-2 was localized in spermatocytes by immunohistochemistry.(2) COX-2 also existed in adult man testis. COX-2 protein was positively stained in spermatocytes and Leydig cells.(3) 2 weeks after administration of rofecoxib, the level of testosterone in the whole testis reached its lower values, being only 50% of control values. However, testosterone level recovered during 4 weeks. After such treatment, histologic examination of these testes showed atrophy of the seminiferous tubules and maturation arrest of spermatogenesis.(4) 2 weeks post-EDS, expression of COX-2 decreased significantly (P.005), in comparison with vehicle-treatment control. 4 weeks after treatment, a new generation of fetal like Leydig cells repopulated in the testicular interstitium resulting in COX-2 expression partially recovered. Although the expression of COX-2 mRNA and protein are enhanced at 8th week after using external testosterone, it wasn't significant higher than control group.

实验研究证明：(1)正常成年雄性大鼠睾丸组织中COX-2在mRNA和蛋白质水平均存在表达，免疫组织化学结果显示COX-2定位于曲细精管内的生精细胞；正常成年男性睾丸组织中同样存在COX-2表达，免疫组织化学结果显示COX-2定位于曲细精管内的生精细胞和Leydig细胞；(2)服用特异性COX-2酶抑制剂rofecoxib 2周后，实验组大鼠睾丸组织内睾酮的含量减少，为正常对照组的50％；持续用药4周后睾丸组织内睾酮浓度逐渐恢复至正常水平；COX-2酶活性降低后病理组织切片显示睾丸内曲细精管萎缩，生精紊乱，持续用药4周时影响最明显；(3)注射特异性Leydig细胞杀灭剂EDS 2周后，实验组大鼠睾丸组织内睾酮浓度降至极低水平时，COX-2的蛋白和基因表达水平也显著低于正常空白对照组（P.005）；使用EDS后第4周，睾丸组织中的睾酮浓度逐渐回升，同样组织中COX-2蛋白表达和mRNA表达水平也相应提高接近正常水平；使用EDS后4周开始给予外源性睾酮，6周和8周时COX-2表达水平的绝对值虽有提高，但与正常大鼠空白对照组比较并无显著性差异，说明外源性雄激素刺激睾丸合成COX-2的作用并不明显。

The results show that the outputs are not always improved by finer subdivisions.

结果表明，空间分割的持续细化并不能够持续地改善计算结果。

It is well known that East China by south had acted as a central place of the national civilization for a long time, and has becoming even more important for the whole country nowadays since the implementation of the"Open Door Policy"in the late 1970s.

实际上，随着社会财富和人口的快速增长，与资源环境的协调已经成为各国持续发展的首要任务和基本目标。这种协调既是可持续理论也是人地关系研究的核心所在。

Pressure waves from continuous vibration look more like this

另一个声波的类型是周期波，当你击打一个铃时，击打下去的那一个瞬间跟拍手有一点相像，声音由铃的振动产生，当铃持续发出声音时，它的震动是以一个特别的频率进行的，这个频率与铃的大小和形状有关，而这个振动造成了铃周围的空气也以相同的频率振动，这使得铃声透过空气的压力波传递到更远的地方，以声音的既有速度进行，持续震动的压力波看起来跟以下这个图很像

"You can continue to develop the change-up and continue to locate better," Girardi said.

&你能够持续加强你的变速球及持续加强你的进垒点。&

L. Molloy, sung by Madam Antoinette Sterling open at the last page with the final indications ad libitum, forte , pedal, animato , sustained pedal, ritirando , close.

G大调歌曲1080伴奏谱，在摊开来的最后一页上可以看到演奏的终指示：随意地，响亮地，持续音，活泼地，要延长的持续音，渐慢，终止。

If your race duration typically falls into the two- to four-hour range simply train for that duration at AeT.

如果您的比赛持续时间显着的降到了2-4小时的范畴，你就只需要针对厌氧阈值的持续时间做训练了。

To understand why, we recommend that you read the excellent analysis of property-casualty competitive dynamics done by Barbara Stewart of Chubb Corp.

保险产业的情况持续依我们先前所预期般地发展，综合比率(定义请参阅第37页)从1979年的100.6 升高到1980年估计的103.5，可预期的是1981到1982年这个趋势将继续持续下去，业界的核保损失将向上攀升，想要了解个中原因的人，我建议你读读Chubb保险集团的年报，其对产险业竞争态势所作的精譬分析，虽然报告不见得令人振奋，但绝对中肯。

For group H2, two thermoseeds with 70℃ curie point were implanted into tumor tissues of each rat with a heating time of 6 minutes. Histological and immunohistochemistry observations on tumors were carried out in groups H1, H2 and C immediately and in 24 hours after the heating treatment.

将接种Walker-256肿瘤细胞的Wistar大鼠随机分为5组，C组、M组、T组、H组（加温治疗H1组，H2组），H1组：瘤内植入2颗居里点57℃热籽，持续30 min；H2组：2颗居里点70℃热籽，持续6 min。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。