Contents

IN THIS ISSUE

763	In this issue

---

EDITORIAL

765	Ageing, P. Balaram

---

CORRESPONDENCE

767	The era of the mind, Rajendra K. Bera
768	Biology versus computers, Raghavendra Gadagkar
768	A clean certificate for transgenic plants, Deepu Mathew and B. N. Sathyanarayana
769	Transgenic crops and biodiversity, S. Seshadri, S. Janarthanan and S. Ignacimuthu
770	Herbal medicine - Some comments, M. K. Chattopadhyay
770	Tropospheric ozone: An emerging problem in the urban environment, S. B. Debaje

Click here to view / download this section

---

NEWS

771	Diversification of agriculture for human nutrition, Mahtab S. Bamji
773	An overview of heavy metals: Impact and remediation, U. N. Joshi and Y. P. Luthra

Click here to view / download this section

---

RESEARCH NEWS

775	New state of matter created at CERN, Rajiv V. Gavai

---

OPINION

777	Climate changes: Projections and prospects, V. M. Meher-Homji

---

779	From the archives

---

SCIENTIFIC CORRESPONDENCE

780	Toxic effect of various plant part extracts on the causal organism of typhoid fever, Dushyent Gehlot and A. Bohra Dushyent Gehlot and A. Bohra
781	Tissue culture of Bulbothrix setschwanensis (lichenized ascomy-cetes) in vitro, B. C. Behera, Urmila Makhija and Bharati Adawadker
783	Earliest complex life on earth: New look from fossil discoveries, Rajesh K. Vishwakarma

Click here to view / download this section

---

GENERAL ARTICLES

786	Should plants keep their (canopy) 'cool' or allow themselves to grow 'warm' under stress: It is a Hobson's choice and plants survive by doing a balancing act, V. R. Sashidhar, S. J. Anke-gowda, Mahesh J. Kulkarni, M. N. Srinivas, T. G. Prasad, U. Naga-lakshmi and R. Devendra
789	Derivatives of ultramafic rocks as decorative and dimensional stone in Rajasthan, M. S. Shekhawat

Click here to view / download this section

---

REVIEW ARTICLE

793	Agrichemicals as antagonist of lectin-mediated Rhizobium-legume symbiosis: Paradigms and prospects, Javed Musarrat and Akhtar Haseeb

---

RESEARCH ACCOUNT

798	Novel biodegradable flocculants based on polysaccharides, R. P. Singh, T. Tripathy, G. P. Karmakar, S. K. Rath, N. C. Karmakar, S. R. Pandey, K. Kannan, S. K. Jain and N. T. Lan

---

SPECIAL SECTION: COMPUTATIONAL SCIENCE

TUTORIALS

804	An introduction to automatic differentiation, Arun Verma
808	An introduction to the proper orthogonal decomposition, Anindya Chatterjee
818	An introduction to load balancing for parallel raytracing on HDC systems, Kalim Qureshi and Masahiko Hatanaka
821	Portable parallel programming on emerging platforms, Guy Delamarter, Sandhya Dwarkadas, Adam Frank and Robert Stets

SURVEYS

828	Reconfigurable computing: Architectures, models and algorithms, Kiran Bondalapati and Viktor K. Prasanna
838	Three-dimensional computer graphics architecture, Tulika Mitra and Tzi-cker Chiueh
847	Supercomputing applications in materials engineering, G. Phanikumar, K. Chattopadhyay and P. Dutta

PERSPECTIVES

850	Computing goes embedded, Pradeep K. Dubey

RESEARCH ARTICLES

852	Molecular dynamics simulations of modelled angiogenin-mononucleotide complexes, M. S. Madhusudhan and S.Vishveshwara
858	Multiple molecular sequence alignment by island parallel genetic algorithm, L. A. Anbarasu, P. Narayanasamy and V. Sundararajan
864	Computer processing of heart rate variability signals for detection of patient status in cardiac care units, D. Narayana Dutt and S. M. Krishnan
869	Seasonal simulation of the monsoon with the NCMRWF model, Ravi S.Nanjundiah
876	Numerical simulation of particulate materials using discrete element modelling, Thallak G. Sitharam
887	A generalized algorithm for modelling phase change problems in materials processing, S. Chakraborty and P. Dutta

---

RESEARCH COMMUNICATIONS

892	Combustion synthesis of cobalt pigments: Blue and pink, T. Mimani and Samrat Ghosh
897	Uranium mineralization in the sandstones of Dharamsala, Tileli area, Mandi district, Himachal Pradesh, India, Mithilesh Sharma, Y. C. Sharma, Bhaskar Basu, Jyotsna Chhabra, R. K. Gupta and Jagmer Singh
899	Structure and tectonics of the Indian peninsular shield - Evidences from seismic velocities, P. R. Reddy and V. Vijaya Rao

---

BOOK REVIEWS

907	Toward a Global Science, reviewed by P. R. K. Rao
908	Apoptosis and Inflammation,reviewed by Neeta Singh
909	Proton Pump Inhibitors: Milestones in Drug Therapy, reviewed by R. Rajagopalan
910	Geology of Rajasthan: Status and Perspective, reviewed by M. Ramakrishnan
911	Sex, Color, and Mate Choice in Guppies, reviewed by Anindya Sinha
912	Faunal Diversity in India, reviewed by K. G. Sivaramakrishnan

Click here to view / download this section

---

PERSONAL NEWS

913	A. K. Chandra - An obituary, K. L. Sebastian

---