And methane is difficult to capture in small volumes at low concentrations.

Blake Stone-Banks on an organic agriculture and biogas programme in Yunnan.

布雷克?斯通-班克斯报道云南新的有机农业和沼气革新项目.

The improvement reaction efficiency is the key to methane's production on industrializationscale. "

提高厌氧消化速度是工业化生产沼气的核心所在.

And finally, the acids are converted to methane gas.

最后, 有机酸转化为沼气.

What types of investment products does Biogas Carbon Offset provide?

沼气减排提供什么类型的投资产品?

Bacteria break down the animal waste to form methane gas.

细菌使动物粪便分解成沼气.

AC : Whew ! I feel like I just made it through the Underground Railroad. Fried chicken anyone?

哦. 我觉得自己刚做完了地下铁. 有谁要炸鸡?

The people that started Underground Railroad were amateurs.

铁路地下化(地铁)的开始,源自一群外行人.

Results: The symptoms such as palpitation, thoraco-depression, shortness breath and pulsation of the external jugular veins occurred during long PR interval while disappeared during short PR interval.

结果：患者表现为长PR间期时出现心悸、胸闷、气促、颈静脉搏动，PR间期恢复正常时症状消失。

Compared with group A, B and control group, the cases in group C were more significant in disappearance of asthma, dyspnea, wheezing sound, and moist rales and hospitalization days was shorter ( P < 0.05).

喘憋消失、气促缓解、哮鸣音消失、湿口罗音消失及平均住院时间C组与A组、B组、对照组三组比较明显缩短，差异均有统计学意义（P均<0.05）。

Patients with DKA manifested dyspnea, digestive symptoms and the classic symptoms of diabetes mellitus at onset of AMI, only 29% patients presented with chest pain.

DKA合并AMI发病时以气促、消化道症状和糖尿病典型三多症状多见，伴随胸痛者只有29%；

In 6~ 9 months following stents implantation, the results of the mean lumen in the stenosis segment, Borg index, FVC, FEV1 and PEF indicate that the long-term effect maintains at a satisfactory level.

在支架植入后6~9个月，分别测定狭窄段气道腔径、气促指数、FVC、FEV1及PEF，显示其疗效依然维持在一个较为理想的状态。

Results UIP occurred more often in males over 50 years of age. Clinical findings included progressive shortness of breath, cough, sputum and crackles over both lung fields.

结果UIP多见于50岁以上的男性，临床主要表现为活动后气促、咳嗽咳痰、双下肺闻及吸气相爆裂音；

The main clinical manifestations for recurrent wheezing, dyspnea, chest tightness or coughing.

临床主要表现为反复发作的喘息、咳嗽、气促、胸闷等症状，常在夜间和（或）清晨发作或加剧。

In both cases can lead to shortness of breath.

以上两种情况均可导致气促。

Statistical analysis the gender, age, course of cough, course of shortness of breath, symptom score of TCM, BODE, pulmonary function between groups.

对组间性别、年龄、咳嗽病程、气促病程、中医症状计分、BODE指数、肺功能等基本情况进行统计分析。

Conclusions The clinical features of drug addicts with IE are: fever, inertia, panting, coughing, cardiac souffle, positive of blood germiculture and pulmonary infection. Echocardiogram is important to diagnosing the infection of tricuspid valve.

结论静脉药瘾并发IE者临床特征为发热、咳嗽、气促，心脏杂音，血细菌培养阳性合并肺感染，超声心动图检查对右心感染有重要价值。

After treatment, the pH value, PaCO 2 and PaCO 2 were significantly improved in experimental group with less short-breath symptom.

治疗后pH、PaO2和PaCO2两组均有统计差异；患者气促症状减轻，临床症状改善。

Palpitation, Panting and Swallen in Lower Limbs for A Month

心悸、气促、下肢浮肿1月

Symptoms as shortness of breath, limb weakness, nausea, vomiting, syncope, chest tightness, dizziness, heart palpitations and pericardial effusion were more likely to happen in Type-A AD than Type-B AD, the difference was statistically significant ( P0.05).

A型主动脉夹层与B型相比较，更易出现气促、四肢乏力、恶心呕吐、晕厥、胸闷、头晕、心悸等症状，心包积液也更常见，差异有统计学意义（P0.05）。

Cough and expectoration were found in 6 cases Breathlessness was found in 2 cases.

无呼吸道症状5例，咳嗽、咳痰8例，其中伴气促2例。