Singular quasilinear elliptic systems in RN\mathbb{R}^N

The existence of positive weak solutions to a singular quasilinear elliptic system in the whole space is established via suitable a priori estimates and Schauder's fixed point theorem

EFFECT OF Salsola vermiculata

Algerian aride zone is rich with medicinal plant, Salsola vermiculata is one of the mosttraditional plant remedies in Bechar region. in this work, we tried to test the inhibitory effect on eight storage soft wheat fungi of various extracts of Salsola vermiculata in vitro and vivo by using grain storage by the coating method. The phytochemical screening of plants showed the detection of tannins, saponisides and flavonoids. The results show a remarkable antifungal effect by most of the extracts tested. The  decrease in the level of fungi observed in wheat samples demonstrates the effectiveness of grain storage by the coating method.Keywords: Salsola vermiculata; Antifungal activity; Coating method; Fungi; soft wheat;Storage

Hydatidose du rachis cervical : A propos d’un cas

L’hydatidose intéresse l’os dans 0,5 à 2 % des cas, dont 44 % de localisations au niveau rachidien. L’étage cervical est la moins fréquente des localisations rachidiennes. Cette atteinte est grave par le risque de compression médullaire haute, et surtout par son caractère récidivant. Les auteurs présentent l’observation d’un jeune patient admis pour une tétraplégie progressive, due à une hydatidose vertébro-médullaire cervicale ; son diagnostic a été évoquée sur l’imagerie par résonance magnétique et confirmée par l’étude anatomopathologique

Phytochemical screening and the antioxidant, antibacterial and antifungal activities of aqueous extracts from the leaves of Salvia officinalis planted in Morocco

The aqueous extract of the leaves of Salvia officinalis planted in Morocco is analyzed using different methods in order to study the different phytochemical components (phytochemical screening) and to test in parallel the antioxidant, antibacterial and antifungal activities. The main phytochemical components of salvia officinalis are: phenolics complex 13.87±1.96 mg E.AG/g, flavonoids 7.38±1.91mg E.Q/g and tannins 0.18±0.03 μg E.Cat/g, as well as different concentrations of saponins, alkaloids and mucilage.  The antioxidant activity is achieved by four different methods: the DPPH test (IC-50 = 8.2 μg/ml higher than BHT (1.2 μg/ml)); the ß-carotene decolorization test (the inhibition of oxidation of the aqueous extract (64.2%) was greater than the negative control (13. 87%)); the reducing power test (FRAP) (detection of a low reducing power of iron for the aqueous extract compared to quercetin) and the total antioxidant capacity (CAT), this test revealed an antioxidant capacity of 103.7±5.8 mg/g. The aqueous extract of salvia officinalis leaves showed antibacterial activity against four pathogenic bacteria: E. coli 57, K. pneumoniae, P. aeruginosa, S. aureus, noting MIC values of 0.25mg/ml; 0.125mg/ml; 0. The extract showed antifungal activity against two yeasts (S. sereveseae (0.25 mg/mlet C. albicans 0.25 mg/ml), using the agar diffusion method and the direct contact method

Phytochemical screening and the antioxidant, antibacterial and antifungal activities of aqueous extracts from the leaves of Lippia triphylla planted in Morocco

The principal objective of the present study is the qualitative and quantitative evaluation of phytochemical compounds, as well as the antibacterial, antifungal and antioxidant activities of the aqueous extract of Lippia triphylla planted in Morocco. The phytochemical screening revealed the presence of flavonoids and alkaloids with different concentrations as well as tannins with a higher content (0.27±0.02mg. Cat/ g extract). The antioxidant activity is carried out by the following methods: the DPPH test (IC-50 = 9.4 µg/ml higher than BHT (0.12 µg/ml)); the ß-carotene decoloration test (the inhibition of oxidation of the aqueous extract (66.17%) was important than the negative control (13. 87%)); the reducing power test (FRAP) (detection of a low iron reducing power for the aqueous extract compared to Quercetin) and the total antioxidant capacity (CAT) (this test revealed an antioxidant capacity of 935.1±6.7 mg/g). On the other hand, the crude aqueous extract from the leaves of Lippia tiphylla showed varying degrees of antimicrobial and antifungal activity against four pathogenic bacteria and two yeasts by the agar diffusion method and the direct contact method. Minimum inhibitory concentration (MIC) values for E. coli 57, K. pneumoniae, P. aeruginosa, S. aureus, S. sereveseae and C. albicans were 50.71±5.42, 50.23±7.247, 50±2.04 12.5±0.517, 25±0.25 and 12.5±0.25 mg/ml respectively. Antimicrobial activity related to standard antibiotics was determined as a positive control

Kyste epidermoïde du quatrieme ventricule : a propos d’un cas

Les kystes épidermoïdes sont des tumeurs bénignes rares développées à partir d’inclusions ectodermiques. Ils siègent habituellement au niveau de l’angle ponto-cérébelleux, la région para-sellaire et la fosse temporale. Leur siège au niveau du quatrième ventricule est inhabituel. Nous rapportons le cas d’une jeune patiente de 44 ans admise pour un syndrome d’hypertension intracrânienne associé à des troubles de la marche. Le diagnostic de kyste épidermoïde du V4 fut évoqué sur les données de l’IRM puis confirmé en per opératoire et en histologie. L’exérèse chirurgicale a été subtotale en raison d’une adhérence de la capsule à la partie supérieure du plancher du V4. Après un recul de 18 mois, la patiente ne manifeste aucun signe de ré-évolution tumorale.Mots clés : chirurgie, IRM de diffusion, kyste épidermoïde, quatrième ventricl

Artificial Kagome Arrays of Nanomagnets: A Frozen Dipolar Spin Ice

Magnetic frustration effects in artificial kagome arrays of nanomagnets are investigated using x-ray photoemission electron microscopy and Monte Carlo simulations. Spin configurations of demagnetized networks reveal unambiguous signatures of long range, dipolar interaction between the nanomagnets. As soon as the system enters the spin ice manifold, the kagome dipolar spin ice model captures the observed physics, while the short range kagome spin ice model fails.Comment: 4 pages, 4 figures, 1 tabl