William Wordsworth,as the representative poet of the romanticism,plays an important role in the history of the EnglishLiterature and is considered an ecological poet.He pursues the harmonious and unified relationship ...William Wordsworth,as the representative poet of the romanticism,plays an important role in the history of the EnglishLiterature and is considered an ecological poet.He pursues the harmonious and unified relationship with man and nature,and con-tributes to the development process of the social.Taking the poem"Nutting"for example,Wordsworth’s ecological view of natureand its reasons,and the realistic significance of his view on nature to the modern world,especially under the background of the ad-vocacy of the community of destiny of human beings,will be explicated and analyzed.展开更多
Activated carbons (ACs) calcined at 400˚C, 500˚C, and 600˚C (AC-400, AC-500, and AC-600) were prepared using palm nut shells from Gabon as raw material and zinc chloride (ZnCl2) as a chemical activating agent. Prepare...Activated carbons (ACs) calcined at 400˚C, 500˚C, and 600˚C (AC-400, AC-500, and AC-600) were prepared using palm nut shells from Gabon as raw material and zinc chloride (ZnCl2) as a chemical activating agent. Prepared ACs were characterized by physisorption of nitrogen (N2), determination of diode and methylene blue numbers for studies of porosity and by quantification and determination of surface functional groups and pH at point of zero charge (pHpzc) respectively, for studies of chemical properties of prepared ACs. Then, effects of calcination temperature (Tcal) on porosity and chemical properties of prepared ACs were studied. The results obtained showed that when the calcination temperature increases from 500˚C to 600˚C, the porosity and chemical properties of prepared ACs are modified. Indeed, the methylene blue and iodine numbers determined for activated carbons AC-400 (460 and 7.94 mg·g−1, respectively) and AC-500 (680 and 8.90 mg·g−1, respectively) are higher than those obtained for AC-600 (360 and 5.75 mg·g−1, respectively). Compared to the AC-500 adsorbent, specific surface areas (SBET) and microporous volume losses for AC-600 were estimated to 44.7% and 45.8%, respectively. Moreover, in our experimental conditions, the effect of Tcal on the quantities of acidic and basic functional groups on the surface of the ACs appears negligible. In addition, results of the pHpzc of prepared ACs showed that as Tcal increases, the pH of the adsorbents increases and tends towards neutrality. Indeed, a stronger acidity was determined on AC-400 (pHpzc = 5.60) compared to those on AC-500 and AC-600 (pHpzc = 6.85 and 6.70, respectively). Also according to the results of porosity and chemical characterizations, adsorption being a surface phenomenon, 500˚C appears to be the optimal calcination temperature for the preparation of activated carbons from palm nut shells in our experimental conditions.展开更多
In order to screen herbicides with ideal safety characteristics to control malignant weed nut grass in sugarcane field, 20% thifensulfuron methyl WP and 65% MCPA·ametryne·diuron WP were selected for the fiel...In order to screen herbicides with ideal safety characteristics to control malignant weed nut grass in sugarcane field, 20% thifensulfuron methyl WP and 65% MCPA·ametryne·diuron WP were selected for the field efficacy trial. The results showed that 20% thifensulfuron methyl WP and 65% MCPA·ametryne·diuron WP had good control effect on nut grass. The optimum dosage of 20% thifensulfuron methyl WP and 65% MCPA.ametryne-diuron WP was 1 125 g/hm^2 （effective ingredients 225 g） and 3 150 g/hm^2 （effective ingredients 2 047.5 g）, respectively. These two herbicides should be dissolved in 675 kg water per hectare and applied in the vigorous growth period of nut grass （height 10-15 cm） with oriented stem leaf spraying. The control effect after 15 days could be above 87.9%.展开更多
NUT癌(NUT carcinoma)又称为伴睾丸核蛋白(the nuclear protein of the testis,NUT)基因重排的中线癌,它是一种组织起源不明的高度侵袭性的恶性肿瘤,非常罕见。以前人们认为该病仅发生于中线器官,但随着病例的积累,现在认为它不仅发生...NUT癌(NUT carcinoma)又称为伴睾丸核蛋白(the nuclear protein of the testis,NUT)基因重排的中线癌,它是一种组织起源不明的高度侵袭性的恶性肿瘤,非常罕见。以前人们认为该病仅发生于中线器官,但随着病例的积累,现在认为它不仅发生于中线器官,还可以发生于非中线器官,如腮腺、颌下腺等。展开更多
The fruit-bearing quantities of nut Korean pines (Pinus Koraiensis) of natural stands in Changbai Mountain, Xiaoxing'an Mountain, and Wanda Mountain and of artificial forest in Hegang area of Heilongjiang Province...The fruit-bearing quantities of nut Korean pines (Pinus Koraiensis) of natural stands in Changbai Mountain, Xiaoxing'an Mountain, and Wanda Mountain and of artificial forest in Hegang area of Heilongjiang Province were investigated and measured by seed collection of singletree during 1988–1998. In order to evaluate the elite nut tree of fructification, the characteristics of fructification of Korena pine, including, the fruit-bearing quantity, output of seed, quantity of cone, cone size, seed size, the ratio of null seed by solid seed, seed percentage of cone, rate of the cones infested with pest, and fruit-bearing index, etc., were analyzed with the variance analysis, multiple comparison and stepwise regression to obtain the contribution ratio of each fruit-bearing factor to fruit-bearing quantity. The multiple correlation factors and the partial correlation factors for fruit-bearing quantities of Korean pine were determined for different geographical areas, and the cone length, thousand-grain-weight, and the seed percentage of cone were considered as important indices for selection of elite trees. The method of modified weighted coefficients was adopted to select the elite nut trees of Korean pine. Standards for selecting elite nut trees from the natural stands and artificial forest of Korean pine were established. This study could provde selection method and standard of elite nut trees for setting up seed orchard of Korean Pine.展开更多
原发性睾丸核蛋白中线癌(NUT中线癌)是伴有睾丸核蛋白(nuclear protein in testis,NUT)基因重排的一种极其罕见并具有高度侵袭性的恶性上皮细胞肿瘤,该肿瘤可发生于全身多个部位,以头颈部中线结构及纵隔多见,组织起源不明,缺乏特异性临...原发性睾丸核蛋白中线癌(NUT中线癌)是伴有睾丸核蛋白(nuclear protein in testis,NUT)基因重排的一种极其罕见并具有高度侵袭性的恶性上皮细胞肿瘤,该肿瘤可发生于全身多个部位,以头颈部中线结构及纵隔多见,组织起源不明,缺乏特异性临床表现,侵袭性强,恶性程度高,确诊时大多已属晚期,且缺乏有效治疗手段,预后极差。展开更多
文摘William Wordsworth,as the representative poet of the romanticism,plays an important role in the history of the EnglishLiterature and is considered an ecological poet.He pursues the harmonious and unified relationship with man and nature,and con-tributes to the development process of the social.Taking the poem"Nutting"for example,Wordsworth’s ecological view of natureand its reasons,and the realistic significance of his view on nature to the modern world,especially under the background of the ad-vocacy of the community of destiny of human beings,will be explicated and analyzed.
文摘Activated carbons (ACs) calcined at 400˚C, 500˚C, and 600˚C (AC-400, AC-500, and AC-600) were prepared using palm nut shells from Gabon as raw material and zinc chloride (ZnCl2) as a chemical activating agent. Prepared ACs were characterized by physisorption of nitrogen (N2), determination of diode and methylene blue numbers for studies of porosity and by quantification and determination of surface functional groups and pH at point of zero charge (pHpzc) respectively, for studies of chemical properties of prepared ACs. Then, effects of calcination temperature (Tcal) on porosity and chemical properties of prepared ACs were studied. The results obtained showed that when the calcination temperature increases from 500˚C to 600˚C, the porosity and chemical properties of prepared ACs are modified. Indeed, the methylene blue and iodine numbers determined for activated carbons AC-400 (460 and 7.94 mg·g−1, respectively) and AC-500 (680 and 8.90 mg·g−1, respectively) are higher than those obtained for AC-600 (360 and 5.75 mg·g−1, respectively). Compared to the AC-500 adsorbent, specific surface areas (SBET) and microporous volume losses for AC-600 were estimated to 44.7% and 45.8%, respectively. Moreover, in our experimental conditions, the effect of Tcal on the quantities of acidic and basic functional groups on the surface of the ACs appears negligible. In addition, results of the pHpzc of prepared ACs showed that as Tcal increases, the pH of the adsorbents increases and tends towards neutrality. Indeed, a stronger acidity was determined on AC-400 (pHpzc = 5.60) compared to those on AC-500 and AC-600 (pHpzc = 6.85 and 6.70, respectively). Also according to the results of porosity and chemical characterizations, adsorption being a surface phenomenon, 500˚C appears to be the optimal calcination temperature for the preparation of activated carbons from palm nut shells in our experimental conditions.
基金Supported by Earmarked Fund for China Agriculture Research System(CARS-20-2-2)Project for Yunnan Provincial Modern Agricultural Industry Technology System(YNGZTX-4-92)~~
文摘In order to screen herbicides with ideal safety characteristics to control malignant weed nut grass in sugarcane field, 20% thifensulfuron methyl WP and 65% MCPA·ametryne·diuron WP were selected for the field efficacy trial. The results showed that 20% thifensulfuron methyl WP and 65% MCPA·ametryne·diuron WP had good control effect on nut grass. The optimum dosage of 20% thifensulfuron methyl WP and 65% MCPA.ametryne-diuron WP was 1 125 g/hm^2 （effective ingredients 225 g） and 3 150 g/hm^2 （effective ingredients 2 047.5 g）, respectively. These two herbicides should be dissolved in 675 kg water per hectare and applied in the vigorous growth period of nut grass （height 10-15 cm） with oriented stem leaf spraying. The control effect after 15 days could be above 87.9%.
文摘NUT癌(NUT carcinoma)又称为伴睾丸核蛋白(the nuclear protein of the testis,NUT)基因重排的中线癌,它是一种组织起源不明的高度侵袭性的恶性肿瘤,非常罕见。以前人们认为该病仅发生于中线器官,但随着病例的积累,现在认为它不仅发生于中线器官,还可以发生于非中线器官,如腮腺、颌下腺等。
基金Sciences and Technology Office of Heilongjiang Province (a grant G99B5-10).
文摘The fruit-bearing quantities of nut Korean pines (Pinus Koraiensis) of natural stands in Changbai Mountain, Xiaoxing'an Mountain, and Wanda Mountain and of artificial forest in Hegang area of Heilongjiang Province were investigated and measured by seed collection of singletree during 1988–1998. In order to evaluate the elite nut tree of fructification, the characteristics of fructification of Korena pine, including, the fruit-bearing quantity, output of seed, quantity of cone, cone size, seed size, the ratio of null seed by solid seed, seed percentage of cone, rate of the cones infested with pest, and fruit-bearing index, etc., were analyzed with the variance analysis, multiple comparison and stepwise regression to obtain the contribution ratio of each fruit-bearing factor to fruit-bearing quantity. The multiple correlation factors and the partial correlation factors for fruit-bearing quantities of Korean pine were determined for different geographical areas, and the cone length, thousand-grain-weight, and the seed percentage of cone were considered as important indices for selection of elite trees. The method of modified weighted coefficients was adopted to select the elite nut trees of Korean pine. Standards for selecting elite nut trees from the natural stands and artificial forest of Korean pine were established. This study could provde selection method and standard of elite nut trees for setting up seed orchard of Korean Pine.
文摘原发性睾丸核蛋白中线癌(NUT中线癌)是伴有睾丸核蛋白(nuclear protein in testis,NUT)基因重排的一种极其罕见并具有高度侵袭性的恶性上皮细胞肿瘤,该肿瘤可发生于全身多个部位,以头颈部中线结构及纵隔多见,组织起源不明,缺乏特异性临床表现,侵袭性强,恶性程度高,确诊时大多已属晚期,且缺乏有效治疗手段,预后极差。
