| Editorial | 7 |
| Burilova E.A., Ziyatdinova A.B., Zyavkina Yu.I., Amirov R.R. Influence of Water-soluble Polymers on the Formation of Manganese(II) Complexonates in Solutions. I. Complexes with EDTA | 10 |
| Burilova E.A., Ziyatdinova A.B., Zyavkina Yu.I., Amirov R.R. Influence of Water-soluble Polymers on the Formation of Manganese(II) Complexonates in Solutions. II. Complexes with DTPA | 26 |
| Shamagsumova R.V., Piven E.S., Sitdikov R.R., Stoikov I.I., Evtyugin G.A., Budnikov H.K. Cholinesterase Sensor Based on Electrode Modified with Silver Nanoparticles | 39 |
| Medyantseva E.P., Brusnitsyn D.V., Varlamova R.M., Baibatarova M.A., Budnikov H.K. Amperometric L-cysteindesulfhydrase Biosensors Based on Modified Screen-Printed Graphite Electrodes for the Determination of Antidepressants | 51 |
| Shaidarova L.G., Chelnokova I.A., Makhmutova G.F., Degteva M.A., Gedmina A.V., Sergeeva T.P., Budnikov H.K. Batch-Injection Determination of Glucose at an Electrode Modified by Cobalt(II) Hexacyanoferrate | 66 |
| Kuramshin A.I., Nikolaev A.A., Cherkasov R.A., Galkin V.I. Interaction of Dialkylphosphites with Platinum and Palladium Complexes and Catalytic Activity of Complexes of Group 10 Metals in the Pudovik Reaction | 78 |
| Neklyudov V.V., Boos G.A., Kuzmina N.L., Nasirova Z.A., Fattakhov S.G., Salnikov Yu.I. Interaction of Tetraoxomolybdate(VI) with Isonicotinic Acid Hydrazide and Tubophen | 95 |
| Bychkova Т.I., Troshanin N.V., Podyachev S.N. Protolytic and Complex Formation Properties of 25,26,27,28-Tetrakis[hydrazinocarbonylmethyloxy]calix[4]arene in Water-Dimethylsulfoxide Media | 109 |
| Ivanova V.V., Nevzorova Т.А. Topography of Cardiolipin Synthases in the Plasma Membrane of E. coli | 120 |
| Morozova Yu.A., Skvortsov E.V., Alimova F.K. Trichoderma reesei Xylanases: Biosynthesis and Application for Hydrolysis of Feed Grain | 127 |
| Dao Thi Thuy Linh, Grigoreva T.V., Yakusheva O.I., Nikonorova V.N., Ilinskaya O.N. Optimization of Petrochemical Wastewater Pretreatment in Bioreactor with Immobilized Microflora | 138 |
| Klevleeva T.R., Novikova L.V., Stepanova N.Yu., Semanov D.A. The Factors of Formation of Toxicological Load in the Bottom Sediments of Small Rivers in the Republic of Tatarstan | 147 |
| Lalomov A.V., Tabolich S.E. Model of Formation of Heavy Mineral Interlayers in Deposits of Alongshore Sediment Flow | 157 |
| Valeeva A.A., Koposov G.F. Influence of Soil Preparation on the Interpretation of Particle-Size Distribution Data | 172 |
| Korolev E.A., Bakhtin A.I., Shilovskii O.P., Nikolaeva V.M., Vorobev V.V., Osin Yu.N., Barieva E.R. The Finds of Native Iron in Pyrite Nodules from the Middle Jurassic Deposits of Tatarstan | 182 |
| Urazaeva M.N., Silantev V.V., Izosov L.A., Terekhov E.P. Non-Marine Bivalve Mollusks from the Lower Permian of Russky Island (Southern Primorye) | 190 |
| Kashevarov G.S., Yakovlev V.A. Diel Periodicity of Invertebrate Drift in the Middle Part of the Mesha River (Republic of Tatarstan) | 209 |
Zeleev R.M., Safin A.R. Parametric System of the Insect Order Strepsiptera
| 221 |
