1. Athenian public slaves never progressed beyond low-grade secretarial jobs.

2. So far the contraband is low-grade stuff from industrial sources, not weapon-grade materials.

3. Low-grade copper and nickel sulphides developed at or near the contacts.

4. Secondly, low-grade sources of minerals and waste dumps can be efficiently exploited.

5. Very low-grade disseminated copper mineralisation may reflect the eroded deep levels of a copper porphyry system.

6. Got a fair bauxite strike and some low-grade iron ore, but it's standard.

7. Subsistence economies sometimes achieve a low-grade stability by the very poverty of the general standard of living.

8. This might initially involve low-grade jobs relocating from elsewhere into the zones.

9. Brown coal A low-grade coal which commonly retains the structures of the original wood. It is high in moisture, low in heat value and checks badly upon drying.

10. The leaching residue of low-grade lithopone is treated with pollution-free normal temperature alkaline smelting.

11. Various chloasma, cyasma, black spot, sun spot, low-grade peeling spot, various biogliph, anti-sallow, desalinate the low-grade freckle , and those have symptoms of melanin formation.

12. The crude phosphoric acid made from low-grade phosphorite was successfully purified through the steps of solvent precipitation, defluorination and desulfuration etc.

13. This situation results in the low-grade education in vocational school, so the reform of vocational curriculum is necessitous.

14. Epithelioid hemangioendothelioma (EHE) is a rare low-grade malignant tumor of vascular origin, rarely seen in the mediastinum.

15. It is sometimes bloody, occasionally accompanied by vomiting and abdominal cramps and much less frequently by low-grade fever.

16. Geothermal energy is, basically, far too rare and too low-grade for widespread economic use.

17. RioFinex examined the Ordovician volcanic rocks of County Tyrone for base metals but found only minor intersections of low-grade copper mineralisation.

18. The most comprehensive available data on exploration for tin-tungsten is around the Mulberry open pit near Bodmin; a large low-grade deposit.

19. Objective: To analyze the clinical features and surgical role of low-grade gliomas of mesial temporal lobe.

20. The invention relates to mesophilic acidophilic bacteria and a biological heap leaching technology for low-grade cobaltiferous sulfide ore concentrates.

21. Manganese ore resources are rich in China, yet with fewer rich ores but more low-grade ores, complex ores and fine refractory ores. rich ore resources are in critical shortage presently.

22. Conclusion: Deep hypothermia has a more efficient protection than low-grade and moderate hypothermia. There is a correlation between protective degree and hypothermic depth in spinal ischemic injury.

22. try its best to collect and create good sentences.

23. Bioleaching, by means of natural populations of Thiobacillus ferrooxidans and related Thiobacilli, for example, allows recovery of up to 70% of the copper in low-grade ores .

24. Many parents have alleged that the schools collapsed because of "tofu dreg construction", a term used to describe construction projects that use low-grade cement and no steel bars for reinforcement.

25. The D2EHPA-TOA organic phase was used as the solvent-extraction system for the concentration of zinc and the separation of ferric ion from the biochemical lixivium of low-grade zinc sulfide.

26. The high-purity manganese carbonate is prepared by leaching manganese with sulfur dioxide, removing impurities, carbonating and crystallizing from Xiangtan's low-grade manganese ore.

27. The deformation was changing from plastic intensity to weakness and the metamorphic facies ranged from amphibolite to low-grade greenschist.

28. High and medial dose groups' mature follicle and atretic follicle have low-grade degeneration.

29. The feasibility of which short-hole shrinkage method is used for mining of low-grade and submarginal ores in Huanren Mine is demonstrated in this paper.

30. Heat pipe ejective air conditioner is a new no pump system, which can use solar energy and other low-grade heat sources.

31. The footwall consists of the Jurassic Bijiashan domal composite granite complex and Sinian low-grade metamorphosed strata in its exocontact zone.

32. German reunification in 1990 saddled the country with East Germany's low-grade brown coal plants, the dirtiest in Europe.

33. A reacting dynamics has been studied, which is about the reaction of the low-grade roasted molybdenite leached with sodium carbonate solution.

34. Postoperative pathological results revealed that 79 cases(86.8%) were low-grade gliomas, 4 cavernous hemangiomas, 4 anaplastic astrocytomas, 2 gliosis, 1 arteriovenous malformation, and 1 gliosarcoma.

35. The low pureness of parents and the inferior quality of seeds are two prime reasons which makes the low-grade quality of seeds produced by intercrossed maize.

36. The results show that ore particle size has an important impact on catalytic bioleaching of low-grade primary copper sulfide ore with activated carbon.

37. Conclusion:Cefatrizine is the most economical drug to be used in treating low-grade and moderate infection of the lower respiratory tract.

38. This paper describes the Mn production and puts forward a new method to mine low-grade rhodochrosite using solving and soaking. The experimental results are presented in the paper.

39. The evolvement tendency of urban tourism should be generalized as a curve of accumbent " S ", which present a course makes up of low-grade development, high-speed development and balanced development.

40. Objective To research into the diagnostic value of IVU(intravenous urography) and ultrasonic examination on low-grade uronephrosis .

41. Objective To study the clinicopathological character of polymorphous low-grade adenocarcinoma(PLGA)and its misdiagnosis analysis.

42. A new type of sulphoaluminate clinker containing barium was burnt from low-grade raw material of barytes,[http:///low-grade.html] and its burning process was studied.

43. First, we learned that when you removed the authoritarian lid the tensions between Iraqi Kurds, Shiites and Sunnis erupted as each faction tested the other's power in a low-grade civil war.

44. Conclusion Metaplastic thymoma is a rarely encountered indolent or low-grade thymic tumor and may represent a distinct clinicopathologic entity.

45. Oxidation roasting was a pretreatment technique for low-grade and complex siderite, the parameters of oxidation roasting were important to roasting efficiency.

46. CONCLUSION. : Disc height and slip percentage had the largest effect on intervertebral foramen area and volume in this model of low-grade, low-dysplasia isthmic spondylolisthesis.

47. In particular, class, Shen says, and now low-grade stress too complex a language lesson, there is no low-grade language class taste.

48. At the presence of sliver ions, the low oxidation potential was more favorable to the copper dissolution than the high potential for low-grade primary copper sulfide ore.

49. In this article the experimental study results are described on the entrainment, elutriation and combustion of low-grade anthracite and sub-bituminous with broad size distribution in the AFBC.

50. The most common adverse reactions following mumps vaccination are parotitis and/or submaxillary gland swelling and low-grade fever.

51. Different teas had different theine contents and the theine content in low-grade tea was higher than that in high-grade tea.

52. The preparative condition of cupric sulfate from low-grade copper ore has been investigated in this paper, the method of removal of iron in the process has also been studied.

53. The trade, however, is characterized by small scale, low-grade export commodities, and imbalance in trade and non-reciprocal trade policies with related neighboring countries.

54. BACKGROUND: According to Eysenck's theory of personality, trait level belongs to low-grade personality, which can better reflect characteristics of individual habitual behavior reaction.

55. Microorganism metallurgical technology and its application in recovery copper from low-grade copper ore are introduced. The importance of the technology are emphasized.

56. Conclusions Squamoid eccrine ductal carcinoma is an exceedingly rare low-grade malignant tumor and can recur after excision but do not metastasize.